[@Dedonus] I can agree with those two things, and I like the idea [@Sep] mentioned where you can't collab with anybody till after your introductory arc. 

However I think for the RP to keep building up and moving forward after intro arcs there needs to be a common subplot to tie everything together sooner than later. Don't build towards the formation of an Avengers team for two seasons and then never actually do anything as Avengers because a two hour scene takes three months to finish in-game between 3-5 players. The obvious choice would be something like Skrulls, with X-characters it could be anything involving an anti-mutant organization, etc. Something's gotta tie everything together though. 

As for [@DrewVonAwesome]'s suggestion, I think everybody still in this using a new crop of characters could be interesting. Maybe instead f leading the way with Spidey, Ded could take Ironman and do like Marvel's doing with him in expanded media...

~KL~