The New Defenders
I feel that Marvel needs to explore its magic universe a lot more. Not only does Marvel have awesome magic characters, but a largely unused background for the magic that occurs. Anyway, this team would work best to explore the universe's use of magic and prevent the misuse of magic. This kind of team would constantly be traveling around the world and between different realms and dimensions. I feel that the goal of this team would be very similar to the New Avengers, but the roster would be a lot more specialized to dealing with mystical threats. Just as a note, I would like to add Thor, Moon Knight and Spider-Man to the team but I think those guys are seeing enough team action. Thor might guest star for some journeys to the Asgardian realm (or what is left of it). I think Moon Knight's connection to a Egyptian God would be great for the team. Spider-Man would be good if he pursues knowledge of his Totemic role on Earth.