I think a lot of people are setting themselves up for disappointment if they think the DLC won't be new teams

I really feel that with how they did the X-men team reveal thats how its gonna go going forward, every reveal will announce the team leader and their team including DLC, so each season will be a new team, that doesn't mean no new x-men or avengers it just means that one season could just be x-force or west coast avengers for example where the characters do fit in the x-men team or avengers and vice versa they just are in a different team because of the way they are doing the roster.