Yeah, it sounds like that one will finally be filling in more of the sequels' backstory. I've been hoping for a book like this since Rise came out, so hopefully this will answer a few of the left over questions. The others sound good too, but that is definitely the most interesting.
The Lando/Luke book sounds interesting. It at least feels like a book that is telling a story that is worth telling, and not just a filler story done to sell a book. Plus, its about some Sequel Trilogy related backstory, which is cool and something I hope they do more of.
14 chapters into Star by Star and I don't think I can continue, both the young and older characters come off as too petty.
It’s been a while since I read the New Jedi Order series. It has its ups and downs. I will say that 19 books was rather excessive for one story arc. Back in the day, I never thought I will be able to finish it
Also, NJO was mostly terrible. I only read Vector Prime back when it came out, and that's about where I stopped paying attention to the novels altogether for a good 10 years, but I eventually got caught up (mostly because I ran out of audiobooks to listen to on public transport, and it was that or run through all the Discworld books a 4th time.) On balance, I don't think I was missing anything special. Honestly though, the Bantam books weren't much better when taken as a whole. The only actually good material there is the Zahn and Stackpole entries. With few exceptions, most everything else ranged from tedious mediocrity to hackneyed nonsense. By comparison the average level of quality with the Disney books has been both way more consistent, and much higher overall. I think the key difference has been that the modern publishing side of things has been much more in tune with Star Wars' "Space Fantasy" aspect, where in the past it was treated far too much like low-level pulp sci-fi.
I owned a single NJO novel, don't remember which one, only because it was gifted. Never read it because I knew nothing about the series. The giver just bought it for me because they knew I liked Star Wars books.
I read all of NJO, and while it went on too long, it was overall pretty good, at least I thought so. The only real exception to that was the book Traitor, easily the most rancid piece of shit ever published under the Star Wars banner and the book that made Jacen Solo the single worst character in the entire franchise. His entire character arc was horrible, and this, for me, made him irredeemable. Then he later killed my favorite SW character (Mara Jade) because the writers were losing their minds in the last few years of the EU (and I say that as someone who loves the old EU and still considers it the best version of the SW Universe), but it all goes back to Traitor.