I like the concept of the Solarion and how sci-fantasy it feels. I'm hoping for more really out there concepts like that. Where the Solarion takes inspiration and derives power from things that are immense (stars), perhaps there could be a class that draws power from things that are tiny, at the quantum level? Their powers can even vary depending on who is observing them. String Theorist! Stringer! Quantarion! You get the idea.
Absalom Station has the Eyes Wide Agency, a private investigation firm of psychics. I'd like to see some sort of psychic class, without going all the way to psionics, that draws power from probability a la Marvel's Domino, uses telekinesis, can communication telepathically, wears fedoras and trench coats, and can buff itself with inner monologues. Neo Noirist.