Doesn't a five man team kind of unbalance things?

I mean, it's the only one in the entire game. Awesomoman's coming back (if the rumblings Kaithas has passed to me are correct), and I think Trad's getting put into another team (as far as I know). I mean I'd love to have Trad back, but when a couple members of BASL and I talked about it, we were against pushing for him to come back because we didn't want to get rid of anyone on the team. And RWBY's always had four-member teams. 

It makes it easier for those teams to complete missions, because even though they scale in difficulty, adding a whole other person makes cooperation much easier. How do we justify the creation of a five man team just the once? Why would Bianca get put back in VGNB, but not Trad back in BASL?

I really hate bringing this up, because I hate feeling like the bad guy for it. But it just seems like a dangerous, and inconsistent, precedent.