I'm not sure if this has been brought up yet, but something that would be a cool addition to glitch would be the ability to "upgrade" your house so you can sell it later for more than what you paid.
This could be done as like a mini street project, structured in the same way, but perhaps with some more specific tasks like painting, installing, adding additions, etc.
Would be a cool way for more veteran players to acquire wealth and give them more to do.