Lots of good ideas here, and lovely presentation, but the terrible mouse handling made it so painful to play I don't think I can bear to do it again. Making this mouse-compatible would make it open to a much wider audience.
(basics like: dont make the player tap z, click 4 times because your mouse handler is guessing the wrong thing to do, then click z a million more times, for stuff that is directly achievable by the user clicking on things. You even have the popup context-sensitive menus already, so there shouldn't be any need for the 'forced keyboard' stuff)