One thing I’d like to see “canon” isn’t so much one particular story or character, but rather a type of story: One off little adventures.
The Han Solo and Lando Calrissian adventures by Brian Daley and L Neil Smith are the perfect examples of this. They make up their own friends and foes, go to completely new worlds, and don’t rely on the same derivative elements and ideas.
They are simply entertaining stories that go off to new places. There’s weird stuff, there’s badass stuff, there’s funny stuff. Its perfect. Star Wars Visions and the Star Wars Tales comics somewhat follow this same idea, though without the parody or “fan-servicy” elements of the later.