A group of us were just tossing ideas back and forth.
For frivolous, ridiculously expensive ideas:
Emotes! Everyone wants more of course, but some could be expensive upgrades instead of just given
Thrilla: ability to moonwalk on command without ale or a beta pickle
First Responder: Free TP to a rook attack
Lazer Beams: a pew pew sound effect -- I dunno exactly what Havok meant, but someone else can decide
Face Freeze: walk around in the TP pose
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And for some more practical but still expensive ones:
Reduction to the TP cooldown
Extra map TP per day
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Did I miss any?