Yes. There was no need to copy Tatooine.
Sounds cool.
See above.
Vader’s helmet as the mcguffin would be cool, but no thanks to Luke showing up earlier.
Not sure how that would fit into the story, but it’s worth keeping in mind if they ever revisit the KOTOR era.
Sounds cool.
NOOOOOOO!!! TFA had enough rehasing as it is.
I could go either way on this idea.
What does the drill do?
Who/what is being rescued?

I like the idea of Starkiller Base being a hoax if it’s a thing at all.