My main concern is this...lets assume that palpatine comes back as a clone or is ressurected back into his prime. If rey without any training in the force(not that crap that happened on anch to) or lightsaber combat without any explanation as to why she is so powerful...will ruin the entire sequel trilogy for me personally.
Im not a rey hater,i loved the force awakens and i thought daisy ridley gave a great performance and did the best with what she was given.
Luke had to train,anakin skywalker trained the better part of his life to be as powerful as he became and was still eclipsed by mace windu, yoda and palpatine. Which is crazy because he was the chosen one with the highest force potential ever.
Anything else is nit picking really and i'll still wait till it comes out in december but if rey beats palpatine in single combat...im done with the new trilogy.