OK, to continue on, first I have to drop this here - great read:
Kreia is Luke through the looking glass. Luke ends by committing himself to an ideal of goodness that transcends the Jedi, leaving it to a new generation to rewrite the canon. That new generation will be led by Rey but, symbolically, also the audience itself. Kreia wanted to just burn the whole thing down. Neither thought the Jedi should, or even could, be reformed.
re: DJ - well, he's also getting a one-shot:
Written by Acker and Blacker (I am not making this up).
And what if the fact that Snoke is not dead was the whole reason why they wrote Luke's final scenes in the way they did? because if Snoke is still alive (and that would make him very, very powerful, indeed), then everyone, upon seeing it, will scream in frustration at not seeing that possibility because they were blinded by the fact that Luke was not really killed by Kylo Ren either. Hmmm.