These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: The Callista Trilogy
Big Lipped Alligator Moment: In the Hoth sequence in Darksaber, Luke and Callista are attacked by a horde of wampas which seem to be commanded by the wampa whose arm Luke cut off in The Empire Strikes Back. This is never commented on again anywhere in the Expanded Universe. Even Wookieepedia ignores it, and they have articles on everything.
Wookiepedia does mention it, and subsequent stories have mentioned the Wampas banding together to attack Echo base prior to the battle of Hoth.
Planet of Twilight in pretty much its entirety. No matter how you approach it, this book is just plain odd.
Deader Than Disco: After Darksaber, no-one could take the "superweapon of the week" plots that had previously dominated Star Wars Expanded Universe fiction seriously anymore. In a weird way, we might have Kevin J. Anderson to thank for the subsequent new directions (eventually resulting in the Yuuzhan Vong arc) taken by the EU.
At least in the previous stories, the superweapons had already been built by competent workers. This showed us what happened when a superweapon gets built by incompetent ones.
Fridge Logic: So, Jedi like Callista can transfer their minds into computers, then into bodies that aren't their own, even if that means getting cut off from the Light Side of the Force. Why is Callista the only one who did this? Couldn't Obi-Wan have helped Luke and the Rebel Alliance more if he hadn't been a Spirit Advisor?
This ability is strongly inferred (practically confirmed in the new Clone Wars novels) to be unique to Callista. Not that Obi-Wan had a computer on hand when he went ghosty anyway.
Well, besides for the Death Star, which he could have hijacked and saved everyone a lot of work.
Mary Sue: Callista aboard the Knight Hammer. She actually manages to take out a Super Star Destroyer with a single torpedo (I guess Imperial damage control was slipping) and to cap things off she tries to take out the Imperial Big Bad, all in one go.
Actually, she set over two dozen Tie bombers to send their concussion missile payloads into the engines and other bombers, which practically gutted the Knight Hammer's engines, making it hurtle into Yavin's star. Not quite one torpedo, although the Mary Sue bit may still stand.
Narm: The Hutt Death Star and Callista Angsting over losing her powers.
Nightmare Fuel: Everything Palpatine does to Lemelisk in the flashbacks.
Relationship Writing Fumble: Daala and Pellaeon are (presumably) merely meant to professionally respect each other but it's very easy to read an element of sexual tension between them.
Sequelitis: Taken as a stand-alone novel, Children of the Jedi is really quite good, and it would probably be held in much fonder regard if it hadn't been followed by Kevin J. Anderson's clusterfuck.
Actually, I think this was mentioned by Madine, but it was determined that even if somebody DID buy the Death Star's blueprints, 1. Very few people actually had the resources to build it anyway, and 2. Those that did were presumably being watched by New Republic Intelligence. Also, the Hutts wanted to reduce competition in the Superweapon department.
3. Durga was an idiot if he thought that would work, and was always going to get himself killed.