No, I meant something else. For example units that are made out of nobles. There is no unlimited supply of them, yet you can build them as much as you like. Or the fact that it takes years to train a proficient longbow archer, and when to many are recruited you are actually depleting the pool of longbow archers...

pool, mercenary pool, I still believe that the mercenary system is far better than the current uninnovative standard RTS system. In M:TW it was impossible to use it since the AI refused to hire them enough. But in R:TW this is no longer the case, but now we are left being unable to change the skin to suit the hiring faction. And we can't hire mercenaries inside settlements and buildings do not affect the rate of regeneration. If that was all possible and we could make buildings unique it would get pretty close to being realistic.