Somebody brought up giving scrappers more love this morning on the Coffee Talk stream. And the Devs mentioned something that was scrapped. I'm not sure what that person meant by love but as far as new power sets go, I think it would be really cool to expand on the Vorpal power from the Judgement set for Incarnates.
There has never been a 'Knife' class added to melee AT's probably because of the idea that a super hero wouldn't use such a short blade if he/she could be using a sword. If a hero could use a knife and teleport to/behind enemies like the vorpal kick and attack then teleport back I think this would make for a very cool power set, I would buy it if it ever came out. Just an idea I wanted to throw out there.