Honestly, I'm a Water at level 59 now, but I've found there are plenty of good lineups. You just have to search for them.

There's no good or bad lineups, just ones that work well against others. I did, however, get completely rolled by a Breeze Dancer using Baki and Naruto, and someone else, with a crapload of clones all over the place. It was nuts! I'd say go for Baki, and any other cool wind ninja you can get your grubby hands on. :3

Not true. That Mystery Breeze Dancer has that resets everyone's cooldowns can make or break a match pretty quickly.