I finally saw it. I'm not going to go into specifics because there is so much fundamentally wrong with this movie it sickens me (and I finally understand why Mark Hamill had such a problem with how Rian Johnson wrote his character, that wasn't Luke. That was a washed up, pathetic excuse for a man). I can't believe we gave up the EU for this crap.
I did, however, find the movie entertaining (an alright movie but abysmal Star Wars). Again Daisy Ridley was a joy to watch on screen and I thought she did a wonderful job as Rey in this film. As much as I hate his character I'm glad we finally got to see some actual development of Kylo's character (even though I will always refer to him as Emo Vader). Seeing Yoda again was a joy and brought a smile to my face. As much as I hate this movie it was wonderful and highly emotional to see Carrie in her last performance (which she killed by the way, one of the high points of the movie for me).
Actually Sledge, Luke has one child in the novels (Ben Skywalker, powerful but not as powerful as his cousins Jacen and Jaina Solo) and he actually marries one of the Emporer's Hand (an elite cadre of force sensitive assassins loyal only to Palpatine, her name was Mara Jade). Palpatine actually inhabits six different clones of himself until he's finally killed off in the EU by Luke (after turning to the Dark Side for awhile). As for force ghosts in the old canon they never interacted with the living world except for training and mentoring those strong in the force so that's why we've never seen them exhibit power like Yoda did. Also Force Projection/Doggleganger was used in the old canon by people like Dooku and Luke (books/comics) but this is the first time we've seen it in the films and the new canon so who knows why they made it do this in the film. I could go on but I won't, this takes this topic off topic and I really only wanted to post my thoughts on this film.