-Well, we actually have 4 bows! Only one is good for actual damage though, and it falls out of use in the later game.
-I think somebody was planning a shop on Uveto that sold a lightning bow, can't remember who, and can't remember if they were continuing though.
-Couch has/is written/writing a dungeon quest for Uveto in which you can get to upgrade Nova with shield-boosters and electro-defence, so there's that piece of Nova-News.
-Colours would be cool though, but I want to be able to turn Nova into a cool duster/coat so I can be all mysterious, brooding, and horny - All at once!
But hey, despite my hypocritical laziness, you could always ask for permission and then write in those small changes yourself, and see if they get coded.