Haven't play that game but I've heard it's similar to Age Of Empires 2.
I've modded it so that I can have population cap of 1000 rather than the low limit of 200. It made it a lot more fun. I could have several armies and attack several places at the same time, without having to kill off my villagers(workers/resource collectors)
Modding attack/defense/hitpoint/damage/etc. is fun in almost any game. A lot of interesting scenarios can be made.