3vE LS/DS/Cantina branch

Long time players have built several 5v5 teams; quite a few toons become unwise choices on 3v3 teams. 3vE content can be a fun/frustrating branch of LS/DS/Cantina, and nodes could be easily built to negate ANY mechanic, so no single team of 3 could complete whole branch.
(3vE does not mean only 3 enemies)
Could give it a more sellable name, "Underdog battles" or something.