… Nah. That seems rather… cheap and practically inevitable. I think RT would try to avoid that kind of conclusion, simply because it's the expected ending. Look at it from this angle:

Oh, yay! The whole team gets maiden powers! Now we gonna beat Cinder and save the day! YAY!

That's something straight out of a children's fairy tale book- Hold on a fucking minute. Team RWBY are all based on fairy tale characters…

Holy. Shit.

I doubt either Weiss or her sister Winter could be the Winter Maiden since the Winter Maiden was known for being patient and calm. Weiss and Winter (Schnee) have very short tempers.