In response to OP,
My memories of Civ 2 are vague, but I have the feeling I was looking for change in combat. Then, came Alpha Centauri and it blew me away. My most memorable moment form that game was when the "I love nature" woman moved a bunch of worms into my border and gifting them to me (we were allies).
I think the reason I welcomed the Alpha Centauri upgrade to many-units-per-tile was the freedom of movement it provided for my troops. As I recall, in Civ 2, regardless how many movement points a unit had, if a unit was in your movement path, it blocked you. Civ 5 alleviated that by letting you pass through friendly units as long as you ended in a vacant tile.
I have to admit that by the time Civ 4 arrived, I began to dislike the new combat system as stack-of-doom syndrome settled on us. Rather than spreading out my units over the battlefield, I grouped them into the same square because I knew that the best defender would defend the rest of the stack. Also, stacking many troops in your cities could make it difficult for AI players to siege them.
Now that they implemented the 1upt system in Civ5, I'm loving it. Now I spread out my units over the terrain. I am carefully picking my targets over a broad area instead of attacking "the stack" in 1 tile. I can now confidently say I am fighting my battles on
fronts. I can create a blockade along my border.
Sure there are some aspects of combat that I would change, but about 1upt specifically?
I hear some players express their dislike for the new embarkation system, describing it as too cumbersome. But IMHO, the pros outweigh the cons.
- How often have you watched in Civ 4 overseas enemies drop off troops on your continent, only to see them get stuck there after making peace because they had no transport to take them away. You'll probably say something like "At least the overseas AI attacked me!"
- But seriously now, with the new system, no need to build transports, just move the units into the ocean: much easier for an AI to understand.
- The most important benefit though is the 1upt on ocean squares. That means your entire army is spread out across the ocean, vulnerable. No longer can you protect transports by hiding them within a stack of battleships. Now you must have a navy maintain a perimeter around your ground troops as they are moved across oceans. Unfortunately the AI is not aware of this vulnerability and does nothing about it (for himself or against you), especially since the AI never has an adequate navy. But again, that is an AI problem.
The only drawback, which I have never encountered mind you, is that theoretically with a too large army, military units would clog up the terrain. To prevent this, maintenance costs become a headache and units are relatively slow to produce compared to previous games.
Another potential drawback to some players is that army sizes are comparatively low to civ 4. It's necessary though to prevent the above problem. The ones to suffer most from small armies/slow production are the AIs. Because they do not preserve their units well, and miscalculate how many units they need for city siege, they often suicide units on cities and they cannot replace those units quickly enough. But like I always say, that's an AI problem, now with the 1upt system itself.
So in conclusion, no I do not miss stacks of doom. If they ever return they'll doom us all.