that's what I was wondering too. I think it would have been a far more interesting reveal to see luke be the new yoda at a jedi acadamy on courscant.
then you find out about the han kids betrayal, then it's a hunt on for hans kid for the rest of the series. to me, that would have been a little more rewarding spending 30 years with the books. even if the jedi characters where different.
with all of lukes students seemingly dead, and luke strangely going into hiding rather than fixing the problem created.......I dunno....
Well, how long has Luke been in hiding exactly?
Kylo Ben was already old enough to kill off all of the students, and if we presume that's when Luke went into hiding....I don't think it's nearly as long as some might think.
Rey was a child at that time too when she was left on Jakku, but do we know exactly how old she is now?
That's probably the amount of time Luke has been in hiding.
Besides, I still believe that he's not just hiding but guarding the remains of Vader.
Which then begs the question, why does he need to guard Vader's remains in the first place?
This is my personal theory anyways and based solely on the fact that I believe Luke didn't exactly go into hiding...more like he's protecting something or someone that can't or shouldn't fall into the wrong hands...or get out on its own.
He gave a partial map to his location, why do that if you're in hiding?
I think it's deeper than just Luke running away.
There's probably a strong Luke + Vader + Kylo Ben story here which might really center around Kylo and Vader in some form or another.
What if Kylo used to talk to Vader's remains and his 'force ghost' responded back in Luke's training camp.....assuming Luke even has Vader's remains that is.
Anyway, that's my theory.
David