The genies... If we upgrading/train them... They get 20% chance to kill all the stack?
I think that The Knight Castle could have another "upgrade" system: Upgrading tier!
For example, Paysan could be upgraded into Ranger (the lvl2 unit).
With a special building in town, and accurate price, theses Humans can learn to hold a bow and to shoot.
I could easily imagine being able to train Paysans to be Pikeman too. (but clearly needs much more training than just shooting a bow)
I guess we can't give them an Horse because Paysan aren't "noble" enough.
~Lands of Enroth~