The problem with having so many civs is the devs have to dedicate so much time and energy to doing +15 HP here, -.02s there, +.01% speed here, +1G there.
I hope they can just pin it down someday and say, “These are the final stats for units in our game. Take it or leave it. Enjoy! Now we’re going to put all our efforts on doing cool things.”
I prefer a focus on cool game improvements, and, of course, trying to address stability issues people might be having. +1s build time is not a cool improvement, imo.