I do think the sequel trilogy feels like a strange add-on to the saga because Anakin’s story ended in ROTJ and you’re just repeating a conflict which already happened. What I would have done it market it as a new saga. You have the Skywalker saga, TPM-ROTJ, and then the sequel saga, whatever it would be nicknamed. Even though I’ve never been fond of George’s idea of the correct watching order and like to view the original and prequel trilogies as separate entities.
That would’ve been the best option. Play up this idea of TFA as “a new beginning” and have that be the start of a new saga.
As it is, the Sequels have changed the saga in an unintended way. When Star Wars was just the OT, it was Luke’s story. When it was the PT and OT, it was retroactively made to be Anakin’s story. Now, with the nine movies we have, the real central character of the saga is Palpatine. It’s the Palpatine Saga.
I agree about the OT and Prequels as separate entities. Watching in release order, it shows how George’s perception of his own story changed over time, which to me is really interesting. But at the same time, it’s not really fair to the OT to try to retroactively frame it as just “the second half of Anakin’s story,” when it’s a lot more than that.