Considering that the original version had 31characters, that means that they will add 2 teams, if maybe iori is dlc and is not considered, maybe the final 4 will be characters related to billy and saiki
The other could be that Iori is considered, and they could still form a team with saiki/ash/botan, billy/?/?
Saiki and Ash seems to be in cahoots at the beginning of the game