I'm glad that the combos don't cross over (so up team doesn't combo with down); each of my teams is an individual unit and wouldn't combo anyway whereas other people split up Team 7 or whatever.
Also, you need to keep track of a lot more ninja. But it's fun and something to do once you're done with dailies.
I used to hate ranked before 45 because of the whole 1v1 auto bull****, but once I was able to get 2 more teams into the mix, things got a bit more interesting.