Do you think there should be unit cap or even city cap? I've completed now all four victories with King difficulty. Second victory was tricky but after that games were quite easy. With start game city spawn with good military support and then war war war against AI. I got all the victories. I think it's kind of weird that you can build so large army without penalty. Only penalty is that you'll get behind by not having buildings. But when you capture AI cities it really doesn't matter. Now I have to test my strategy with next level. King level AI city defense and offensive was poor. There were random Legion SODs but that's pretty much it.