[quote=@Divine Darkness]
Have some characters in mind, young characters or age-regressing some traditionally adult characters.

As I write this characters I thinking about include: Ultragirl, Kate Bishop, Rogue, Nova (unsure which one) and/or possibly Miles Morales.
My first idea was turning Kate into a vigilante (think Arrow season 1). I would maybe introduce Cletus Kasady as well.
My second idea was possibly building a small group of mutants to become a version of the Brotherhood.
And, my third was bringing together a group of characters whom all have alien origins.

Because my work load usually begins to slowly increase this time of year I'm a little worried about my posting, so I was also thinking of basing my first character outside of New York, at least temporarily.
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I was actually considering a few weeks ago on using Ultragirl as a character in another game, so that's interesting. Would want to read a tale about her. 

The Miles Morales and Cletus Kasady bits, though, I would say would be dependent on whomever the Spider-Man player turns out to be, as they are legacy characters and rather important ones at that. Though, that's just my two-cents, keep in mind, I have no real authority on the matter. Though it does seem that, for Cletus Kasady, there are other characters that can be used without taking a central Spider-villain. Especially if you're just needing a prominent serial killer, as there are plenty of those throughout Marvel. 

And if you're worried about activity, Nova might be a good route for that as, dealing with space-tales, you generally don't have to worry about holding others up if you are unable to post for awhile. And Nova is an interesting character to read, anyways.