Powersets you'd like to see...

Wet Noodle Assault

Staff/Pole-arm!
Wind controllers!
Sythe!
Earth Blast!

And for fun: Chuck Norris Epic AT

Imagine the PVP, it would make entire servers implode!

Instrument Playing (could be like Sonic Blasting but easier on the player's ears)
Katamari Melee
Household Tools Manipulation (Imagine fighting off Lord Recluse with your superpowered vacuum cleaner!)
..And for a travel power, Nitro-powered Wheelchair

Oh and I would also like to see a posesssion powerset where you take direct control of the enemy's body, kinda like Harbinger from ME2.
I would also like to see shape shifting where you steal enemy's appearance and powers.

Doubt any of these will happen though.

Cheerleader summoning
Animal Control (or Summoning)
Escrima
Bojutsu or Pole arms fighting styles (Including Halberd and spear)
Street Fighting
Kickboxing
Capoeira
Martial Arts secondary for healing, defensive and or resistance purposes

I'd like to see an armor set that's doing similar things to what the proposed changes to Energy Armor would do.

Absorbtion - +Res (w/a chance for Heal, +Regen +End, +Recovery, +Rech, or etc... when hit)

Reflection - +Res (w/a chance to do damage to the attacker)

Parry - +Def (w/a chance for -ToHit or KD effect)

Armors that cause -End, -Regen, -Recharge, Slow, Chance for Mez, etc... when hit)



I'd also like to see the Chaining mechanic applied to a teleport based attack set (as well as a teleport based attack set)

Matter Manipulation defence set. Your touch can rearrange atoms, allowing you to drain mass(=health) from your foes or yourself(if no foes are in melee range) and use it to harden your skin, close your wounds or create weapons and obstacles.
Mostly consisting of channelled powers of which only 1 can be active that gain more and more mass as long as they are active making bigger walls/bombs the longer they last before being interrupted.

Shapeshifting, a melee set with a mechanic similar to Ammo Swapping, where you change shape into vampiriy, warwolves and twisted earth models to change the effects of your attacks, along with a change into a random unsuspicious object for immobile stealth.

Escrimador melee set

Evil Toys MM set

Cybernetics buff set

Throwing knife blast set

Well personally I don;t care what Positron said i demand clown summoning or I will stop paying.. oh no wait then when 21 hits I can't be in charge of my base... Well I will think of something. LOL

How about Drunken Master martial arts/ defense sets.. your character is so wasted they can't feel pain and since they wobble and weave as they walk they tend to avoid most damaging attacks. All attacks revolve around accidentally hitting enemies as you search through rooms for anything to drink.

Insulting Blast attacks.. your hero/stand up comic uses his verbal blasts to inflict damage much like PSI. higher level attacks could actually be so nasty the target would end up in the fetal position and require years of therapy to recover.

Chest Melee

Dumb Luck Armor

Monologue Control

The Plot which contrives to induce enemies into falling for a devious, subtle, yet intricate and massive conceit that eventually manages to come back upon itself in ways beyond even the users own comprehension.

"No...No Clowns..." - Positron.

Soccer Mom Lore Pets.

Mime (featuring the ever popular control power "trapped in a box")
Poison Pen/Wit (Scrapper Set, Patron Powers from Cyrano D'Bergerac)
Glare (includy Steely Gaze, Evil Eye, and "If looks could kill")
TMI

Carrot Assault
Lettuce Control
Feather Manipulation
Pie Summoning
Soap Bubbles Armour
Pull my finger Blast

I'd like to see a mimic powerset.

Whoever you are fighting gives you access to their abilities, would have to be an epic set.

It would be difficult to implement though, and they still wouldn't give us access to Ghost Widow's "I Win!" attack. lol