Just make all classes overpowered, thats the way it was "balanced", and thats the way it got fun!
Btw, upkeep is probably one the biggest fucking misstakes that ever hit this mod, killed alot of the fun. Then they slowed it all down, making cavalry and archers alot more effective then slow infantry. Nothing was broken, but it got "fixed" anyway. We dont need any nerfs, just increase the speed, revert animation changes (gawd they feel so stiff and akward). Just as Xolvern, I prefer the cRPG with old xp/gold system, and the first months after the new xp system was added. It all got so linear after that, no diversity at all. Just lameness and boring grind.
