What I really think would improve this game would be scaling Food production off of Farmer/Peasant population. Make it higher for the first 500 or so, but as you get more and more, it scales downward, until it plateaus off, making wells more useful as a later-game buy, because your farmers are making the food for the better majority of your first billion gold.
The price-jump from Village to Region is a little extreme, I've been tweaking and playing for almost a week now, and still can't quite get the needed funds together :/
Also, Why is it that Their rockets don't have to correspond to Gravitational pull unless it benifits them? That sun should be throwing their shots off, and it it, and the purple planet can pull someone back from the far corner of the map, there is no reason that their shots shouldn't be going willy-nilly
This game is...just ugh. Between slow, buggy graphics to repetitious "Missions" and just in general slowness, this is a sit down for a week and play kind of game, not something for a Flash Platform