I have some suggestions. ##Future Era Wonders## Shared Learning: Upon building this Wonder all units gain the amount of XP equal to that of the most experienced unit. Any time a unit gains experience, every unit in that nations army gains experience as well. Virtual Training Facility: This building provides XP for every turn a unit is posted there. I'd make'em myself, but I've just begun Lua and haven't even gotten into Civ 5 lua modding yet.