Um. They're at Strength 24. For the strongest unit - Battlesuits.
They don't demolish anything.
I've tried. I fought the AI when it used Battlesuits, too. They're mildly stronger than Marines (Strength 16).
Still not enough on their own to take a city. Well, I suppose the AI could be bamboozeld into doing stupid things one way or the other, but a straight assault on a 36-40 Defense City? Nuh uh. No rush.
They're not equal to tier 3 Infantry. They're worse. In every way. Like, you're better off deleting CNDRs and Xenoswarms and use the resource for something that's actually of use.
I do not call this an improvement, let alone a big one.
Compared to strength 14 marines, 24 strength is very nasty. And the weakest unit is the Xenoswarm at 22 strength, which is still very nasty comparatively, for a hefty discount in production cost (100 vs 160).
So yeah, pretty nasty.
Except the units with less strength when they come out, which is all of them.
Why on earth would you attack a city with one unit? That's idiocy. You use the strength 24 units to kill the enemy's strength 14 units, then you use the resulting clear battlefield to capture their cities.
They have equal strength and you've already spent the production, and there isn't a unit to spend Xenomass or Firaxite on until Affinity 7, so doing what you advise would also be idiocy.
The tier 4 affinity rush has certainly been nerfed. The window of opportunity is much smaller now if your enemies get to lvl 6 quickly, or are just spamming armors.
I would suggest a small strength boost, 28 or 30, or a price reduction for affinty 4 units.
All of that would be of use if the AI Marines and my units met each other in equal duel-style combats and tried to kill each other one on one. Even then, Marines can pick +5 hp regen on defense, which still makes it tough.
If you rushed units, you only have Gunners, Marines, and the UU. It'll take a while to clear out the AI units. The 24 Strength Battlesuits give an edge, but not a commanding edge. They're not Strength 40 Battlesuits by a long shot. Even with a clear battlefield, you'll need a lot of units to take a Strength 40 City, at which point I'm wondering which part of this is a "rush" as opposed to just a normal attack with some Affinity beelining - which you'd do as part of any organized military assault at any point in the game anyway.
Because my Battlesuits were worse than my normal Infantry.
Right, so the good part of the military you mentioned is the Battlesuits. A strength 40 city is either a capital or they've spent science and production to boost it up with a rocket battery or similar. It is not a standard city, which gets something like 23 strength.
Battlesuits are seriously better than tier 2 infantry (24 versus 14), slightly worse than tier 3 infantry (24 vs 24 but no abilities), and then significantly better than tier 4 infantry (66 vs 48).
I'll take that over battlesuits obsoleting infantry from the moment they appear until the end of the game.
In that respect, the "Battlesuit Rush" is no different than any other unit slingshot in any Civ ever made. Riflemen slingshots in Civ4 allowed players to take a purely Rifleman stack and take entire Civs with it. Cavalry Rushing - just Cavalry, nothing else. When you rush with Cho Ku No, Mohawk Warriors, Horsemen, Companion Cavalry, or Landknecht, it's mostly just that unit attacking and virtually nothing else. The Aff4 rushes were of these kinds of play.
If you need siege units to attack, the unit isn't viable for aiming for a rush, which means that the fact that it obsoletes so fast is a very, very bad thing.
If you rushed units, you only have Gunners, Marines, and the UU. It'll take a while to clear out the AI units. The 24 Strength Battlesuits give an edge, but not a commanding edge. They're not Strength 40 Battlesuits by a long shot.
Once that CARVR comes along at Affinity 7, you're best served deleting CNDRs to make Firaxite available for them. And then you just don't make CNDRs until 10/4.