Ultra Seven
Ponderous
Which teams are one BAF-sized character away from being done? I can't see Overdrive from Superior Foes as a BAF.
I don't know if there's any with just one member missing, besides maybe Outback Colossus (assuming this wave's potential Psylocke is Outback, which feels like a good educated guess). I can think of a bunch of teams with a few holes that would fit the bill. I'm also just ignoring the name "American Secret" because I cannot for the life of me tie it to a real character, even loosely.
Box for Alpha Flight, but he opens up a Talisman-sized can of worms about what other characters would be necessary. Gargoyle would be keen, but I think Dwight recently shot him down as a possibility. Charlie-27 is unlikely for similar reasons. Atlas would be hideously under-scaled, not to mention that they've quietly abandoned the T-Bolts. Volcana could be fudged as a BAF, as discussed on here a few days back. But I think there's only one option:
... the amazing colossal Warbow, to help build out the multiversal Council of Warbows from "Crisis on Infinite Warbows."