-Add New types of structure that use 3x3...(2x2 is good too but wouldn't it be better Effect when we can build stuctures with 3x3 and it will be like world wonder buildings such as Twin tower,World trade Center,KLCC,Or some kind of sturctures that come into your mind )
-Try to add A little bit multiplayer like leaderboard that count the most inhabitants, or visitor from other player.(You can use this advantage to ask player to register An account to set their name in leaderboard or maybe google play account..)
-Try to add some achievement....

-This game has so much potential,It will be a waste if you guys Stop making progress In this game...