I would like to see the final product so as to fully understand what you have in mind. Also, since you are not going to use the changed units from the vanilla you could use their sprites, if you like them. I've read the descriptions you have sent me, but again I'll be able to tell if the mod is consistent only after I see the final product. Though, at that point my input would be an input of just another player since its going to be your mod
.