Okay, the thing's wrong here is the coins system. I think it'd much be better if you change the coins with civilians that needs to be saved. Because I personally think it is morally corrupt to collect coins while putting off the damn fire. It's like, "hey, I'd put off that fire after I rip you off". SO seriously, change the coins thingy.
It would be nice if there's a score system for the manoeuvres that we've done to the rocket. I mean controlling the rocket itself isn't easy, so there could be score for double loop, for the speed, for feinting, or etc. That would be really cool.