Anything's possible. That springs out of the season finalé (which I just saw two days ago), where they decide to form a super team.
Which could be cool, but I'm expecting all low-lever characters (effects are expensive!); I don't know if I should expect costumes (they did say secret IDs, though).

There's no reason to either expect or not expect the Monroes out of that.

~ Le Messor
"Be as smart as you can, but remember it is always better to be wise than to be smart."
~ Alan Alda