Along with Rey being 'nobody', showing you don't have to be of royal blood to be powerful.
Altho, if you think about it, Anakin was also 'nobody'.
Maybe the stable boy can be a future 'nobody'.
We knew nothing more about Palp until 1-3. Backstory became interesting because we knew him. 5-6 he was just the Emperor with the wrinkly face (and originally fish eyes). So, yes, 1-3 actually did something good for us, they made Palp an interesting character; arguably one of the more interesting in that whole trilogy. Can you imagine the backstory movies they could do on him?
The whole Las Vegas thing was new gen PC bull$hit; war breed corruption breeds greed breeds war crap. Even the, who is a bad guy who is a good guy in the arms race thing was tree hugger.
Did anyone else see a symbol when the tree burned, like either a mirror or the jedi temple or a big rebel symbol in the whole of the flame? Maybe that was just me seeing things.
I think Yoda showed up specifically to teach Luke that he could effect the real world from beyond when he torched the tree. The look on Luke's face was, but dude you are dead, yo!
I think Luke was supposed to not have much of a part in the next movie, going along with the let the past die theme. If we get rid of the old people and make the new ones the heroes, then they can move on.
I think CF's daughter is going to become more of a major player now. She already seemed to be the official unnamed facilitator in this one, but I be she is developed more or the future as an homage or tribute to her mom.