I think I've mentioned this elsewhere, but your game is one I'm planning to come back to.
I'll probably need a little more time than I have right now to give you a really good answer on this.
I was planning to sit down and play it again at some point over the next few days, so I'll hit you up here (or somewhere, think I'm following you) when I get the chance to reeeeally sink my teeth in.
I think more than anything a game like yours is one of those where you really FEEL out what's good/not good (although a better designer than I might have a more objective answer).
I'll get back to you!