Here's some more grain for the mill. IO9 has a small feature on some of the ideas that were considered for TFA but never used.
They range (imho) from the great to the awful:
http://io9.gizmodo.com/13-story-ideas-that-were-dropped-from-star-wars-the-fo-1749962882
I'm neutral on most of these but both alternative ideas for Supreme Leader Snoke are things I would have liked far more than the Voldermort we got. That Snoke should be female was one suggestion and I like that just for reasons of balance and variety. The other idea, that Snoke should be beautiful to look at, that he should be this perfect to look at man, I also like. I can see him as a Dorian Grey type. (N.b. for clarification, Dorian Grey in the novel is white, but I'm not talking about ethnicity but the idea of the leader just being this beautiful, prince-like figure, yet despicably evil - whether he look like a young Omar Sharif or D.B. Woodside or Jared Leto).
Edited by knasserII