I may have something for you. Admittedly, I don't have a ton of experience with 3rd Edition, and my only days that I would be able to do it are very early Thursday (9:30am PST), very LATE Thursday (11:30pm PST) or on Saturday or Sunday. The idea is that the world is very similar to our own. Super powers are essentially relegated to comic books and their associated movies, and while some people might be particularly talented, very very few people have what one might consider actual super powers. That all changes when a terror attack on Discord City, Nevada (This world's version of Las Vegas) results in multiple explosions from various chemical weapons detonated around the city. Most people caught in the explosions of course die, others become very ill... but a few people change on a molecular level... People start to develop the super powers that were once found in comic books -- and not all of them are keen on becoming heroes so much as using those powers for their own benefit. Not only are the newly empowered a problem, but in the aftermath of the attacks, crime is up and police are virtually powerless to stop the sudden crimewave sweeping the city. And if that wasn't bad enough, certain shadowy corporations operating in Discord City may have actually had a hand in the initial attacks, and may be looking to profit from the chaos. Our players will begin play as unpowered people and play through the initial attacks. They wont just wake up one day and have all their powers at their disposal immediately, but by the time we get through what is essentially the 'Intro' of the game, they'll essentially be Power Level 7 characters. As of now the only limitations I have in mind are that people shouldn't be things like aliens or cyborgs or something. They should be once ordinary people who were caught in the initial attacks and were changed somehow -- That being said, there's no reason why they can't suddenly develop physical mutations that make them look like aliens, or have those changes be the ability to integrate machines or super intelligence that results in some sort of super-science ironman suit. As far as limits on powers, I don't have anything immediately in mind. I reserve veto power in the event that some concept looks game-breaking even by M&M standards though. If the times don't work for you, then I don't mind if you look elsewhere. There's a good chance I'll make up this game in the future if I don't do it now.