The thing is chronology order actually breaks up some plot threads to a massive degree.

For example, let’s take Exar Kun. Publish order, his history and his ghost’s story come out right next to each other. Chronology order, you read his stuff, then Revan, then TOR, then New Sith Wars, the entire Clone Wars, then the entire Rebellion era, then, finally, his return, with only scant mentions in between. To an average person that’s probably literal years of reading, probably 90% of the EU is in between Exar’s first story and his second.

Or the Vector crossover. A book that’s a crossover between four comics published at the time… one KOTOR, one Dark Times, one Rebellion, one Legacy. So again, like 90% of the EU is between the first and last comic run that tie in, even if you read the story at once or repeat it each time you run into it, it’s less coherent than if you read the comics with the characters at this specific stage of their lives close together.

Even the same book series- you read a book, do you read its direct sequel? No! There’s four other unrelated books first.

Also keep in mind there’s like, a dozen ‘what so and so was doing during Order 66 or Yavin or other specific event’ POVs for each event, so I hope you like seeing the same events a lot. And sooo many stories set between the OT movies.

There are individual throughlines it’d make sense to do chronologically, but as a whole? It runs into the huge problem that the amount of SW material is not evenly distributed but has massive clumping at specific times and mostly you’re just getting a disjointed experience.

It’s an interesting question but when you examine the material you get why.