[quote=@Renny]
Lost Galaxy had a somewhat animal theme and it was mostly about space.
[/quote]

Again, mystic. Lost Galaxy got their powers from five Excalibur-esque swords found in stone and used thousands of years ago to protect the galaxy. And their main villain was a witch. A space witch but still a witch.

Yeah, I know my lore (nostalgia for the win!)

All that said, space doesn't seem like a bad idea if we were to pick a theme.