First suggestion: /signed
Second suggestion: Uhh, not really. I'd rather see more stuff done on other ATs than more MM powersets.
Third suggestion: This was going to be done, a villian group called "Siren's Call Phanoms" and they had Sonic, but devs pulled em out. So unlikely to happen.
oops, i forgot to put one incy suggestion down before anybody replied, change blasters energy manipulation to be more like energy assault, the reason is that its near enough the same as Energy melee, while the other minipulation powers have both ranged and melee. 
A total of 14 of my nerves have been harmed in the making of this post...
on your 4th, would be fun to do some fire melee while being a fire blaster :P
From a post I read called 'Gun Control' I saw a power for dominators and controllers, I have come up with a powerset for Dominators as a secondary that goes well with it (Controllers would have traps as a proliferation) Its called Street 'Combat'. the powerset is as follows:
1) Moltov Cocktail
2) Bat smash
3) Fire Bomb
4) Spit Fire
5) Street Cred (self boost)
6) Bat swing (PBAoE)
7) Bat smash (Disorient)
8) Oil Slick
9) Rain of Moltovs
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New Mastermind powerset 'Agents' a human male NPC, the units are as follows:
1st tier - Field Agent
focusing on the two attack powers from Fighting and basic psi blast powers.
Dressed in a black suit, equiped gets shades and an earpiece and upgraded gets fingerless gloves and a tie
2nd tier - Infiltrator
has martial arts and psi assault powers.
Dressed in a tuxedo (wedding edition), equiped gets shades, an earpiece and black gloves, upgraded gets at tie and sleeker shades
3rd Tier- Man in black
Has super strength and mind control powers
Dressed in a trenchcoat and slacks, equiped gets a V cut trenchcoat, earpiece and shades, upgraded hets a tie and tactical belt
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A new NPC group called 'Sirens' these female enemies focus on powers from Sonic Attack, Cold Domination and Storm Summoning, this group will appear in Port Oaks, Independance Port and other water based islands. they are mainly based around wind storm powers, sirens song and AoE cold powers
A total of 14 of my nerves have been harmed in the making of this post...