When did I miss the meeting where it was decided that Dark Empire was shit?
I recall it was well received and was credited as being part of the Thrawn era releases that jump-started the franchise back to life.
I give Dark Empire credit for getting Star Wars' foot in the door in the realm of comics.
Also keep in mind that back then, we were STARVED for Star Wars material, and just ate up everything we could get our hands on. So if the reaction to it back then was positive, it is largely because of the "OMG! NEW STAR WARS STUFF!" reaction.
Nowadays, I could trip over a rock and land in something Star Wars related, so we have to be a lot pickier with what we choose to consume, if we decide to consume any of it. But that post ROTJ-pre Special Edition period was almost a dead zone for Star Wars material, so we were happy just to have books and comics when they came out.
Some of that early EU is very good (Thrawn Trilogy is the true VII, VIII, and IX to me, and always will be) and some of it not so much (Crystal Star...yikes) but there was so little of it that we were just happy to have it. I know it is hard to imagine a world where there wasn't much Star Wars out there, but that was the case back then.
Now, my take on Dark Empire:
Again, I give it credit for being an honest attempt at a Star Wars comic series and getting the brand recognition in that medium.
And it does have some really good things in it. It is one of the earliest examples I can think of where Boba Fett was used effectively.
Some of the art work is good, though it leans a little too much into being monochromatic, and a lot of it is this pukey green color whenever Luke has his Lightsaber out.
However, it never was one of my favorites because I felt the Emperor cloning plot and Luke's temporary fall to the Dark Side kind of went against the ending of Return of the Jedi too much. Also, the Galaxy Gun (as with most planet busters in the EU) was fucking dumb. Now World Devestators I was actually okay with because those at least served an additional function of collecting a planet's resources for the Empire to use in addition to destroying a world, so at least it felt somewhat different from the typical Death Star knock off.
If I was being honest, I'd give it about C. Its place in Star Wars history is that it was what made it a viable brand for comic books, but on its own, its just okay. Still, I'd say its worth checking out at least once.