Well, poor storytelling and inconsistent character development can make a Star Wars comic pretty bad.
One reason a Star Wars comic could be the worst is if it strays too far from the established lore and doesn't fit within the overall Star Wars canon. Also, if the dialogue is clunky or the pacing is off, it can really bring down the quality.
For some like 'The Crystal Star', it's the overly complex and uninteresting plot. It gets so convoluted that it's hard for readers to stay engaged. Others like 'Darksaber' have poor character development. The characters seem flat and their actions don't always make sense in the context of the Star Wars universe. And then there are novels where the writing style is just not up to par, like in 'The Courtship of Princess Leia' where the story seems more like a strange fanfiction rather than a proper Star Wars story.
In my opinion, the story of the sequel trilogy had some major flaws that could be considered 'the worst'. The way they handled Luke Skywalker's character in 'The Last Jedi' was really disappointing. They made him seem so out of character compared to the original trilogy. It was like they were trying to subvert expectations but ended up ruining the essence of the beloved character.
The prequel trilogy has its detractors who think it's part of the worst Star Wars stories. The overly complicated trade disputes in Episode I as a starting point for the whole saga seemed dull. Also, the wooden acting in parts of the prequels and some of the less - than - impressive CGI, like Jar Jar Binks, made it a bit of a let - down for many fans who had high hopes based on the original trilogy.
Well, 'The Courtship of Princess Leia' is not well - liked by many fans and could be seen as one of the worst Star Wars novels. It has a rather odd premise. The relationship between Han and Leia is portrayed in a way that many fans find unappealing. And the overall plot doesn't really contribute much to the broader Star Wars saga.
Maybe the comic guy has very high expectations and this trailer didn't meet them.
One of the often - criticized Star Wars canon novels is 'Aftermath'. Many fans thought the plot was a bit too slow - paced and the new characters introduced didn't quite capture the essence of the Star Wars universe as well as they could have.
The 'Dark Nest' trilogy is often considered among the worst. The storylines were a bit of a mess, and it deviated too much from the core themes and feel of Star Wars. It introduced some elements that were hard to swallow for many fans, like some of the new and rather strange alien species and their behaviors.
In my opinion, 'The New Rebellion' is not a great addition to the EU novels. The story lacks the usual excitement of Star Wars. The conflict seems forced and the resolution is rather anticlimactic. It also doesn't do a great job of building on the existing relationships between the main characters.
One that often gets the title of the worst is 'The Courtship of Princess Leia'. It has a plot that seems a bit forced. The way it tries to explore the relationship between the main characters feels unnatural. And it doesn't really enhance the overall Star Wars story but rather feels like a side - note that doesn't quite fit in.
One of the worst might be 'The Crystal Star'. It has a convoluted plot that's hard to follow. Another could be 'Darksaber' which fails to capture the essence of the Star Wars universe in terms of its story and character development. And 'The Courtship of Princess Leia' also often makes the list due to its rather strange and unappealing storyline.