What do we like about what is widely regarded as the Unofficial Sequel Trilogy? What do we dislike?

I like them a lot. I think Zahn nailed the characters; I can hear the voices of the original actors.He created great villains in Thrawn and C’Baoth without just giving us another boring Darkside user.He did not try to write a screenplay - these are novels that were written as novels; not intended to be made into films. He Gave Wedge some serious “screentime”.

A minor gripe was that he created 12 Grand Admirals other than Thrawn - all military geniuses. But we of course never see them in the films. And he left their fates for others to figure out The EU never really was able explain what they were doing during The Battle of Endor to my satisfaction.