I wish the system - which I believe originated in KOTOR, which I’m currently playing for the first time - of lightsaber colours being chosen according to whether you’re a Jedi Guardian (blue), Consular (green) or Sentinel (yellow) was still canon. I like the idea of your lightsaber colour meaning something about you as a person. In canon, blue green and yellow lightsabers only signify that you’re probably a Jedi, and that’s about it.
There are novels and comics like Zahn’s original Thrawn trilogy, Shadows of the Empire and James Luceno’s Dark Lord: The Rise of Darth Vader, that I love. But I’m actually happy with those being part of a separate timeline to make room for new stories. I don’t think Disney declaring loads of beloved Star Wars stuff non-canon was them tossing it aside and implying it doesn’t matter, canonicity was just the chosen system for distinguishing the different timelines. I’m fine with that.
I do hope they make the KOTOR games effectively canon by not straying far from the original story in this remake (and possible remakes of KOTOR 2 and SWTOR, who knows?) they have coming up.