should pcs be both? maybe someone wants to be a pokemon? and someone wants to be a trainer? I'm not sure what would be best. i could see both working.
Well I certainly want to be a pokemon. And I'm not as interested in playing my own trainer. I think two players working separately creates better tension/harmony.
Of course, other players might want to be both a pokemon and a human in the same scene.
I think if you try to allow for both of those things, then you lose focus. You risk making a less polished less well made game in favour of trying to do too much at once.