Holy shit this sounds awesome.
If this does end up happening, I'd happily bring back the Shadowrun-style Rarity that I was using in the last multiverse RP I was in. She was basically one of the D-listers of the multiverse police force (the Infinity Patrol) and they never really trusted her with much responsibility because she made a habit of heavy collateral damage.
PLEASE LET THIS STILL HAPPEN I LOVE MULTIVERSE STUFF