As with all changes, you gain some things and you lose some things. With the upcoming changes, what will you miss most?
Mine is the Mark 30 Extremis proc. I play as Thor 90% of the time. I like pairing him with a Captain America team-up. That way, when Extremis procs, I get to have Thor, Cap, Ironman, the Avengers Big 3 out all at the same time. It's not a big deal, and maybe this proc will creep up on some item down the line, but I'll miss being able to wreck face with this setup.