Just a little rant while I have some down time at work.
I'm really interested in the Power Control power set. It sounds like it's mainly based on -regen. Increasing enemy cool downs, decreasing their endurance. Immersion wise, their mind isn't hindered, they're fully mobile, they just can't do their thing. That guy who throws fire just won't be able to muster any. It's hard to glimpse much more, after all there's just 2 power examples. Nullify Velocity seems like the 'default' move, a very short root/immobilize, -regen and damage. I figure to a target this would feel like a sudden intense numb sensation, a hiccup that interrupts what ever they're trying to do, whether throwing an element or aiming a gun. Obstruction seems more situational, let's hope it has low trolling potential in public areas. But the guy gets the intense numbing that throws off his aim and leaves him feeling drained. When he musters up the strength to point the gun again, a wall appears in the way. Even the wall emits a numbing feeling if you get close. Unlike other sets that will be hard controls, with holds and sleeps, this will be about disallowing the enemy resources. It may be a bit more difficult to take it solo as the enemy pretty much gets all their opening attacks or 'alpha strike' off, but anything beyond that is going to be hard for them.
Combining that with Vampiric Emanation is going to have so much thematic synergy. The target getting numb as you casually steal his power and distribute it among allies.
While not the route I'm going to go, I can see darkness being a popular theme for the combo. I'm hoping for something more runic, or to at least make it look like ancient magics from before the modern arcana used today. Enigmatic is the goal you could say, as it's going to be very indirect compared to other sets.
No idea what the other powers are, no idea what the pet would be, or if there's even a pet. But that's the set that's had my mind hooked on the game since shortly after the examples were given.
What are everyone else's ideas about? What themes are you hoping to explore when your Operator is made?