When I look at most superhero teams, excluding teams made of solo characters like the JLA and to an extent the Avengers, I usually don't see an ensemble cast of great, dynamic characters. Most often focus is given to two or three favorites of the author, with the rest sticking around the background. They're basically supporting characters at best, scenery at worst.
That said, the Marvel and DC universes are structured so that any character can at any point get their own series. So, I ask you all: Which characters associated exclusively or even mostly with teams would do best at supporting their own titles?
My vote goes to the Beast: while I know he had that mini in the 90's with Karma and Cannonball, I think he's an incredibly interesting character that is almost never used. He's got all the key ingredients for a spin-off title; a catchy name and appearance, an appealing and complex personality, a lot of potential for supporting cast ( given how he's known as X-Man, Avenger, bio-chemist, and mutant poster boy ), and a role of great importance as one of the smartest men in the MU. Yet he's usually shuffled off to the side as comic relief, particularly in the Avengers. Even in the X-Men, his best stories are often dropped ( like the devolving thing in Morrison's X-Men ). Sadly, the Beast story I've enjoyed the most was the one in the Simonsons' X-Factor where he rapidly became dumber and dumber. That should never be a character's best moment.