I'm a little surprised that there isn't more backstory available actually - or is it in the works?
Anyway, I would love to see more information on the Giants, on the lands, how they came to be, what's up with the Rook - narratives, stories, animation, music, that sort of thing. The Glitch canon is so full of potential - just paying attention to what the Bubble Trees say give you plenty of clues.
If there isn't already material in the works, I propose that we as a community create it. Let us write the history: we imagine the Imagination. Doing it Lexicon-style would really suit the community nature of the game. And as we get more material and more research, we can come up with ideas for new quests, games, features, characters, items...all sorts of things.