Even keeping the peace gets boring if you don't have some conflict to make it worth keeping. I felt that the triumvite of Luke-Han-Leia had kinda run its course. A lot of the stories seemed to rehash the original story in some way but transplanted it to another planet. There are only so many Luke-Han-Leia vs The Empire/Imperial Remnant stories you can have before it gets tired.
That's why I enjoyed the Rogue Squadron stories more. Granted, they were derived from other sources - The Dirty Dozen, The A-Team even! but they were good fun and consigned the major characters to the sidelines in favour of promoting Wedge Antilles to the limelight.
As for the rumour that GL hates what has happened to the EU...well he only has himself to blame. He agreed to the killing of a major character which put the Han Depression element into things, but has recently been quoted as saying he hated seeing that happen. He also apparently hated the fact Luke got married...Well if he did, why agree...surely he does have some creative input into the situations these characters get into!!