Have you read the history of middle earth by Christopher Tolkien editing JRRT, or John D Rateliff history of the Hobbit.
the 1950s Hobbit to bring it in line with lord of the rings was never finished. It was shockingly terrible and without the charm of the children’s novel. I’m quite glad that and the new shadow was never completed.
I do wish the revised Silmarillion, and the Fall of Gondolin had been completed. The longer version of Beren and Luthien. or the lost road had been completed.
The earliest Silmarillion the book of Lost Tales and Unfinished Tales of Numenor and Middle Earth I did read quite a few times.