I'm not sure how you could not foresee this. As it seems like an obvious issue with RAFing up so many teams...

Which team you level up depends largely on your goals. If you just want to PvP, I would suggest the all druid or all shammy teams. IF you want to run instances, I would recomment the Pally, Shamx2 Druid team, and try to find a healer that will run with you regularly.

Why did you make them on different servers?