Nicely done, I look forward to clear objectives. Are you going to make this multiplayer, or a single player campign? It has a lot of potential for either, I think.
Cool game, my strategy: When you get out to the big destructive meteors, pull them into each other, then drag them into the sun. To get a big planet, get it in a counter clockwise orbit and let it go - you'll only need occasional corrections, and it'll keep eating the small asteroids as they spawn.
Mansion makes significantly more money per second then anything except grapes. Like sch8192 said, mansion makes 2500, and its meter fills faster than any non-crop except maybe cows and eggs, but those don't make anywhere near enough to keep up. Grapes may make more if you accelerate with both automated equipment and tools.