I don't think a lot of the stuff discussed will be explained TBH in EP8 ...TFA wants the audience to just accept stuff without explanation.
The obvious stuff with Luke will drive the narrative in the next movie but the fluff we want answers for will be swept under the carpet...
TFA requires a leap of faith , but unless you are willing to just soak it up the niggles will ruin it for old school fans.
But it's clear Disney don't care about that...they just want to drive the machine forward...they've popped in the old characters as a token gesture tick box and will now create what they want...the rules have changed.
There is nothing to base that on. No one is denying if she learnt all that in 5 minutes they won't be dissapointed, but everyone is at least prepared to give it time in the trilogy. I voiced my own dislikes with the film, once or twice but saying none of that will be resolved, well I'm willing to wager Rey's back story will be filled in. If not in Ep 8 then the last of the trilogy.
I don't see why that's such a problem, comparing it to the originals make no sense as Star Wars had to be made as a stand alone film, they didn't gamble on a trilogy so everything had to appear finished. This one was always a trilogy, it's like watching the first episode of game of thrones and then complaining you don't know all the back story to the White Walkers.
This will be an ever expanding and evolving universe, you are not going to get all the answers in one film. Again I wasn't a big fan of it and some of your earlier complaints where similar to mine but jeez this has gone on so long now I don't see what's to be gained repeating yourself.