Yeah, gonna agree with Dremora on this.
Changing the team doesn't always fix the issue unless you fight the same person/team every time.
It's either SB, Naruto, Ao, and Mei or AF, Mabui, Tenten GNW, and Mei that usually floor stomp arena right now. Course the few exceptions with those CF, Kyuubi Naruto, Gaara, and Killer Bee teams as well.
So there isn't really a "plan" you can adjust to counter any of these teams and that's only listing 3 teams.
There are much more, but only rather take the time to list these 3 as they are the most commonly seen when I do arena.