I've played CoH for a little under three years now and I've loved quite a few of the powersets the game has, but there's one that I've always loved that disappointed me because CoH didn't (and probably won't for some time) have it.
That would be a purely magic-based set. Sure, some sets can fit into the magic category, but I was thinking a set based purely around magic.
What I'm thinking is a set centered around MMs, Doms, and Trollers.
The primary set could be Circles of Power. For Doms and Trollers this would be a purely mezz oriented set that had it's effects take place under the target's feet; y'know like a real Circle. For MMs, I figure it would be the Pet Summoning effect; where Tier 1 pets are three elemental sprites, Tier 2 has two Constructs, and the last is a Celestial being.
The secondary could be Eldritch Assault for Dominators and the Probability Distortion that was suggested earlier for Trollers and MMs.
On a side note: Whe some of you mentioned Probability Distortion; I couldn't help but think of Reality Alteration and the Scarlet Witch from Marvel LOL >.>
I'd like to see a natural long range set. One I've really wanted is razor sharp playing cards. Does lethal damage with DoT for bleeding effects.