I see, I see, my point still stands though... oh well. Are you alright with me taking up the important role of the leader? I have a character in mind that will suit just fine for this role - I suspect the Caelurus Tribe, being associated with the land and steel, is characterized as more harsh and bestial, right? Therefore, they would be led by a Pokemon representing those qualities.
If that's not the case, excuse me but you don't provide any information regarding those two Tribes, which would be welcome in this case. If you want players to form a solid Pokemon SU, you'll need to have established some details as well.