THE HIP IS REAL! The new graphics the new civs!! I'm definitely feeling it all but.... will we have balance?

I'm thrilled most of all for multi-player. Yes they added a lil bit of everything for each group of players and I'm sure I'll enjoy some of the stuff like the next guy. But more than anything will we have balance? Or will these 2 new civ replace the TAD lames and Microsoft call it a day while the community partisan into fan patches? I hope they are dedicated long enough to balance of gameplay which I understand is tough since it takes time and ppl trying to exploit builds and units and competing etc etc to figure out what needs fixing.