I haven't been playing Star Trek (v429) for long, but I did play a series of games with the Borg.
I was fairly disappointed.
I can see how, in some situations, the Borg could really be a powerhouse. But, it all hinges on the very early game. If the Borg fail to dominate early, they're usually defeated fairly easily. If not exactly a cakewalk, they certainly have little offensive power to affect a victory.
That's a bad thing. Yes, I know this isn't a heavily worked mod and I do appreciate all the effort that has gone into it. But, the Borg really aren't a viable choice as a civilization, compared with others. Their victory is determined very early in the game. If it isn't cemented by then, they're doomed. (At least in the five or so games I played with them.) All Civs should have a fairly equal chance at victory, even if not all Civs have realistic access to similar victory conditions.
Most, if not all, of my Borg games wound down to me spamming attacks armed with as many standoff weapons as I could muster and the most powerful captured ships I could find along with plenty of cannon fodder. Then, I'd usually get to some point in the game where defenders would "nuke" my stack, pretty much ending any hope of a successful capture of a planet, pretty much ending any hope of the ability to produce better ships, better industrial bases, better cash flow to support invasions of large "Stacks of Spam."
What's the solution? Well, if the current model is the only acceptable one, there is no way to balance the Borg. Either they'll get lucky with good starting placement and a rapid success they can capitalize on in early wars, or they'll get steamrolled later in the game. Either way, the Borg as they are designed now, do not "play" like one would expect the Borg to play. Admittedly, the idea of tech advancement through captured planets and battles is a good one. It just doesn't suite the Borg as they are, right now.
The Borg have problems that the current model doesn't help. They can't support large attacks of lower strength ships - They generally don't have the economic base for it. By the time they do, they don't have the ship designs and, by the time they have those, they don't have the industrial base to support spamming higher strength ships in any meaningful amount if they're at war... which is the only way they can realistically gain tech.
In essence, the Borg depend on the one thing that no player-run game element should ever have to depend on - Chance. When a game is designed so that Chance is the largest element, rather than player skill, it is no longer a "game."
I'm sure many will disagree. (If anyone ever reads this.
) There seem to be some Borg fans that believe the Borg are already powerful enough. But, it's still left to chance, not player skill. And, that is always a bad thing.
How to fix it?
That depends on how one wants to go about it. Some of it could be fixed with Borg specific Tech Trees... Happy Coding. Some fixes might be found in Borg specific Civics.. again, Happy Coding. Borg specific buildings could help, but I think they'd be too obvious and cheesy.
What I think would be easiest to do, since I'm not a codemonkey and have no 1337 mad skeelz, is to allow the Borg research, but scale their research capability back with negatives from necessary buildings. So, if they can build a barracks, a pretty necessary building, they get a research penalty from it. The same goes with a hospital and some other buildings. Also, add in Borg Specific UUs like the Cube and Sphere units that retain their current ability to capture ships and add the ability to those units to obtain tech from captured planets. However, no other units, especially lower tech ones, have similar abilities. As the game progresses, and the Borg get access to their UUs with all the neat abilities, the Borg become much more dependent on winning combats and taking over planets than being entirely dependent upon it throughout the entire game.
The key for any enjoyable game is to have the outcome dependent upon one's skills, not left in the hands of chance. In order to attain that goal, I think the Borg need a rework. I realize that such an eventuality is doubtful, but I wanted to put in my two coppers, just in case anyone wondered why their enjoyment in playing the Borg happens to be fairly random.
I'm sure there are a couple of players that have some sort of iron-clad strategy in playing the Borg. If they would like to add their comments, I'd love to read them.
I was fairly disappointed.
I can see how, in some situations, the Borg could really be a powerhouse. But, it all hinges on the very early game. If the Borg fail to dominate early, they're usually defeated fairly easily. If not exactly a cakewalk, they certainly have little offensive power to affect a victory.
That's a bad thing. Yes, I know this isn't a heavily worked mod and I do appreciate all the effort that has gone into it. But, the Borg really aren't a viable choice as a civilization, compared with others. Their victory is determined very early in the game. If it isn't cemented by then, they're doomed. (At least in the five or so games I played with them.) All Civs should have a fairly equal chance at victory, even if not all Civs have realistic access to similar victory conditions.
Most, if not all, of my Borg games wound down to me spamming attacks armed with as many standoff weapons as I could muster and the most powerful captured ships I could find along with plenty of cannon fodder. Then, I'd usually get to some point in the game where defenders would "nuke" my stack, pretty much ending any hope of a successful capture of a planet, pretty much ending any hope of the ability to produce better ships, better industrial bases, better cash flow to support invasions of large "Stacks of Spam."
What's the solution? Well, if the current model is the only acceptable one, there is no way to balance the Borg. Either they'll get lucky with good starting placement and a rapid success they can capitalize on in early wars, or they'll get steamrolled later in the game. Either way, the Borg as they are designed now, do not "play" like one would expect the Borg to play. Admittedly, the idea of tech advancement through captured planets and battles is a good one. It just doesn't suite the Borg as they are, right now.
The Borg have problems that the current model doesn't help. They can't support large attacks of lower strength ships - They generally don't have the economic base for it. By the time they do, they don't have the ship designs and, by the time they have those, they don't have the industrial base to support spamming higher strength ships in any meaningful amount if they're at war... which is the only way they can realistically gain tech.
In essence, the Borg depend on the one thing that no player-run game element should ever have to depend on - Chance. When a game is designed so that Chance is the largest element, rather than player skill, it is no longer a "game."
I'm sure many will disagree. (If anyone ever reads this.

How to fix it?
That depends on how one wants to go about it. Some of it could be fixed with Borg specific Tech Trees... Happy Coding. Some fixes might be found in Borg specific Civics.. again, Happy Coding. Borg specific buildings could help, but I think they'd be too obvious and cheesy.
What I think would be easiest to do, since I'm not a codemonkey and have no 1337 mad skeelz, is to allow the Borg research, but scale their research capability back with negatives from necessary buildings. So, if they can build a barracks, a pretty necessary building, they get a research penalty from it. The same goes with a hospital and some other buildings. Also, add in Borg Specific UUs like the Cube and Sphere units that retain their current ability to capture ships and add the ability to those units to obtain tech from captured planets. However, no other units, especially lower tech ones, have similar abilities. As the game progresses, and the Borg get access to their UUs with all the neat abilities, the Borg become much more dependent on winning combats and taking over planets than being entirely dependent upon it throughout the entire game.
The key for any enjoyable game is to have the outcome dependent upon one's skills, not left in the hands of chance. In order to attain that goal, I think the Borg need a rework. I realize that such an eventuality is doubtful, but I wanted to put in my two coppers, just in case anyone wondered why their enjoyment in playing the Borg happens to be fairly random.
I'm sure there are a couple of players that have some sort of iron-clad strategy in playing the Borg. If they would like to add their comments, I'd love to read them.