I only read the early EU and Vector Prime because I knew Chewie died. Thrawn was great. Super weapons are pretty boring and are really only useful when you're getting started. Once your are up and running you need someone who is all brains and psychology, not power. That's why you had the Death Star in Star Wars, and Vader and his big reveal as the thing in Empire.
The lack of imagination really sucks. Too many super weapons for one thing. Also the Clone Emperor was really stupid as was resurrecting Luke's struggle with the dark side. Been there, done that. Yawn.
One thing I really dislike is explaining plot holes that aren't plot holes. For some reason, everyone is convinced that Vader and the Emperor should be able to locate Yoda, Kenobi, Luke and Leia through the Force no matter where they are, and the fact that they didn't do this for 20 years is some kind of huge plot hole that needs to be explained. For Yoda they explained this "plot hole" by saying the Dark Side cave masked Yoda's "Force scent," or some such.
I'm not really sure why anyone would think this kind of "Force GPS" is even possible. If Vader could have done this, why does he use probe droids to find Luke at Hoth and torture his friends to lure his son to him in Empire? How come Luke and Vader are surprised to encounter each other when the former shows up at Endor in Jedi? How come Vader never locates Kenobi until his old master is in the same hanger with him, maybe 50 feet away?
Stuff like that just makes me think of the EU as being kind of dumb, especially when I went and spoiled myself on authors like Asimov, Clarke, etc. They were really smart guys that were knowledgeable about many things; science, language, science, history, logic, and did I mention science? Too many authors (and filmmakers) seem to lack well-rounded education.
But what really irks me is how often EU writers are really dumb when it comes to understanding meaning and subtext and what Star Wars was all about.
The EU's escalation of Force "super powers" is a great example of this. In the movies it was pretty clear that, while Force users had some amazing physical and mental abilities, these were fairly limited. They can run faster and jump higher, survive some environments and events that would kill others, and had some limited precognition, telekinesis, and telepathy. Yet the EU has Jedi initiates flinging a fleet of Star Destroyers out of the Yavin system or the Cloned Emperor creating "Force storms" that ripped apart super star destroyers, Force body swapping, etc.
The justification for this is always to cite Yoda's line about "size matters not" and telling Luke that moving stones and moving an X-Wing are "no different, only different in your mind" so technically throwing starships around doesn't contradict what Yoda says and in fact it's exactly what Yoda was talking about.
No. Wrong. It's not what Yoda or the Empire Strikes Back was about at all. Not one bit. The "Do or Do Not" scene was all about Luke's attitude and how it was holding him back and he was setting himself up to fail. Lifting the X-Wing out of the swamp was just used to make a point because Luke thought it was impossible.
With Yoda, we were expecting a "great warrior," not a frail old muppet who walked with a cane. The whole point of making Yoda physically weak was to show us that the Force was something that transcended the physical world. It was a spiritual thing. Yes you could do some amazing magic tricks but that wasn't the point.
Relying on super powers and super weapons is easy. Lots of franchises fall victim to it. If the bad guy has a big gun, you beat him by blowing it up. It's got a David vs. Goliath underdog element built in. So easy. The trouble is it only works once. It works in the first chapter when you don't have time for a complex villain, but after that it needs to get psychological.
In Star Trek II the genesis device was just a mcguffin; what made the movie interesting was the battle of wits between Kahn and Kirk. Kahn get the upper hand initially by outsmarting Kirk, and Kirk beat him by doing the same. They beat the super weapon by making the ultimate sacrifice with Spock's death.
In Star Wars the Death Star explosion always gets a cheer, but the more memorable moment is Vader's "I am your father," line. Though he had already beaten Luke physically, that line destroyed him psychologically.
With Batman Begins the plot is to destroy Ra's train. With the Dark Knight the whole movie is about what Batman has to do to defeat the joker. Does he cross that line and kill him? Does he reveal his identity and surrender?
You get the idea.