Nyah ha! I've thought long and hard on this one. I mean, that whole "reality control" bit is nice, but I think people would get into a lot more trouble than they realize with a power like that. There are a lot of small, tiny nuances behind the scenes that people tend to overlook. So, my wish-list of pre-meditated powers:
Oh yeah. I'd call myself "The Dark Ubernaught". This arose from an inside joke about villains treating their good henchmen disposably and their disposable henchmen well. It stuck, somehow.
Power 1: Insanely fast, all-encompasing regeneration. I mean like, no sooner is the knife gone or the bullet passed through than the wound is closed and reknit. This would also apply to every other conceivable form of death: nothing short of instantaineous disintigration should be able to do the trick. I mean, what good are all the other powers in the world if you're dead?
Power 2: Telekinesis. And I don't mean like "Uhg, if I concentrate on that maybe it'll move" telekinesis, I mean like "Mountain? What mountain?" telekinesis. Sure, it's asking a lot, but I have a theory that telekinesis could replicate virtually every power in the known universe in the hands of the bright.
Power 3: Heightened Awareness. Like, just being really perceptive of everything going on, a profoundly deep understanding of psychology, multi-tasking to the extreme, and possibly a bit of mind-xxxxing immunity, to boot. No good if someone hatches some stupid plan to overthrow you and you don't pick up on it right away, or tries to trick you on an off day or sneak up behind you or something, or mind control you. Would definately have to be preternaturally aware.
Power 4: Psychometry (Power to read the history of objects). People are so lousy at giving good information; why not just ask the wall?
So, a munchkiny little list of powers, right? Well, you asked what I wanted, not what would be fair for me to have in a world where everyone has super-powers. For my villainous outfit, I'd wear black boots and gloves, and grey clothing with black trim, upon which would be a very thin and delicate LCD display which would display all sorts of neat rune-ish symbols stolen from various fantasy artists in every color of the rainbow, shifting constantly. My entire cape would be made thusly, as well. I'd also wear really evil looking goggles, black frames, gray straps, and some sinister cobalt blue lenses. I'd definately be all about long hair, and a goatee would suit the look fine, too. I'd also keep a conventional gun, something simple like maybe a .45 handy. Just for effect, you know?
As for MO, on occasional rampages, I'd at all times keep with me a huge, twisted heap of black iron, and wrap myself in a massive, grotesque humanoid figure of jagged edges and twisted form, and rely on my heightened awareness to guide my rampaging. You know, just for fun.
When engaged in actual fighting of super heroes, I'd put to use the true synergy of all these powers. First, I'd split my mind up into different tasks. One would animate the huge pile of metal as a minion, and keep it fighting the most physically powerful heroes. A second would be devoted to maintaining a telekinetic field of impassable nature around me. A third would form bubbles high up in the atmosphere, randomly from all over the world, and bring them down to me, so as to ensure a steady supply of clear oxygen. The remainder of my attention would be turned towards the battle, where I would employ a slew of dastardly and unsavory tactics. I know I've ranted a long time, but if anyone really wants to see to what uses precise control of hideously strong telekinesis can be put, read on.
Though you can't get a full, satisfying mind control effect, you can definately prey on the limbs, Legatto Bluesummers style, and get some hero-on-hero fighting action going. That's always fun.
Flinging tons of small debris through the air at near-relativistic speeds usually has the effect of making things hurt.
Compressing water until it begins undergoing fusion and then hurling the resulting mass at your enemies and undoing the forces that keep it from exploding tends to be painful, as well as doing a good deal of clearcutting of annoying buildings.
Similarly, air can be compressed until it becomes a superheated plasma. Then, you could wrap it around your enemies like Darkseid's Omega Beams. That's always fun.
Focusing one's full sadism on a single opponent, you could afflict every square inch of their body with 3-4g's...in different directions. While this could eventually tear someone apart, it would only cause agony nearly unnamable if you didn't get too crazy with it.
Forming a tiny, airless bubble around someone's head, through which anything else may pass. It's just more fun when something so easily overlooked turns out to be the downfall of the mighty.
Alternatively to the heating thing, you could actively slow things down on a molecular level (this is where that awareness really comes in handy) and freeze temperatures down as low as you want them. Good way to remove unsighly extremeties. Like the hero's head.
Waterballoons the size of Texas. Wee!
The list goes on for ages. If another power can do it, telekinesis can probably give a convincing show of replicating it.
If I ruled the world, Ivan Rebroff's "Cossack Patrol" would be the Global Anthem. I just like it.