You know how you can make weapons and shiz? Perhaps you can incorporate battles and crap during player mode, like even conduct them in build mode too, get like goblin camps, bandits, or even other player's villages to raid them for resources and have it so you enroll people in the army and if you enroll everyone, than you don't get resources or anything else until the battle is finished... Turn this into an mmo worth playing! Add armor and more types of weapons and give it an rpg feel. This is my advice, do what you want with it, but I think the ideas I've made would make this game a top one even without good graphics
Be awesome to make this into a multyplayer game, and maybe more units, graphics, choices, empires and story? That would make this game boss, it's still awesome and it's been out for a long time, make some more!!