The difference between Star Trek and Star Wars is simple though. Star Wars is a pop culture phenomenon. Star Trek is niche. So it's fair to hold the original trilogy in reverence, because, frankly, it is that iconic and Star Wars is, without a shadow of a doubt, the largest movie property existing.
I'm fine with spinoffs. I think spin-offs would be great, actually—Star Wars has a rich universe, lots of potential. But more of the Seven Samurai-reimagination type, more KoTOR, less dredging up old characters. No one wants a spinoff of a main character. They might think they do, but they really don't. If that main character had a meaningful arc, it would've been in a movie already. Revisionist retcons do no one any good. I can't think of a single movie spinoff of a major character that has been any good, because they are completely and utterly pointless.
We don't need to know what Aragorn was doing before the Lord of the Rings because if that was important, it would've been in the Lord of the Rings. (You could make the case for the Hobbit --> LoTR fits the bill, and that's the only one that remotely came close in my mind, but there's a good 60 year gap. Not what's being proposed with these movies.)
Obi-Wan has an arc. Is it a good arc? not particularly, but it exists and further prequel-ing it up is destined for failure. It's done. Same (especially) with Han. He had an arc. It had a beginning, and an ending. It's done. Let it be, Kennedy. You can make far more money making quality spin-offs over the easy cash in. Retconning character arcs is always, always a recipe for disaster. It's why prequels in general are usually failures.
I'm fine with spinoffs. I think spin-offs would be great, actually—Star Wars has a rich universe, lots of potential. But more of the Seven Samurai-reimagination type, more KoTOR, less dredging up old characters. No one wants a spinoff of a main character. They might think they do, but they really don't. If that main character had a meaningful arc, it would've been in a movie already. Revisionist retcons do no one any good. I can't think of a single movie spinoff of a major character that has been any good, because they are completely and utterly pointless.
We don't need to know what Aragorn was doing before the Lord of the Rings because if that was important, it would've been in the Lord of the Rings. (You could make the case for the Hobbit --> LoTR fits the bill, and that's the only one that remotely came close in my mind, but there's a good 60 year gap. Not what's being proposed with these movies.)
Obi-Wan has an arc. Is it a good arc? not particularly, but it exists and further prequel-ing it up is destined for failure. It's done. Same (especially) with Han. He had an arc. It had a beginning, and an ending. It's done. Let it be, Kennedy. You can make far more money making quality spin-offs over the easy cash in. Retconning character arcs is always, always a recipe for disaster. It's why prequels in general are usually failures.