I put the Dresden up in patrons rather than just linking to a mythweaver game with rpgmp3 people playing to have something extra there for the patrons.
In terms of a new play by post I have been having some thoughts of a possible Shadowrun 5th ed story. I have been thinking of suggesting it for Ootak after we eventually finish our Emerald City campaign (which is still in character creation). I would be open to developing it further and running it for rpgmp3 people if there was a desire for it but have no solid plans for such at the moment. Dresden is more story focused and the dice range is fairly small anyway so I am fine just trusting people to report their rolls but for something crunchier like Shadowrun I would prefer an out in the open dice roll function. I know there are ways around not having a dice roller built into a forum such as web pages that can save people's rolls for verification but I think those are less user friendly than an in-forum solution.
re-the supers thing, to quote Southpark "Simpsons did it!" All you really need is one good hook to make the character unique. In the Gamer's Haven City of Lost Angels actual play a player who came in partway through the game is playing what is basically a mutant Static Shock clone. Part of his back story is that the owners of the Static Shock I.P. even sued him to make him change his costume.