This could also be an option, I just personally don't like the design of an unit getting automatically better when reaching an Age.Add speed bonus to militia line automatically upon reaching Imp, reduce upgrade cost of Champion. Also, I don't like that lith habs are faster than celt habs. So, add in 5% speed bonus to celt infantry in Imp
Yeah I agree I thought about that as well, that's a bit weird that Lith pikemen are faster than Celts, but I learned to live with it tbh