Okay I'll be specific. 1. Luke's attitude.
Elaboration?
2. Creation of a character (Perla), only to have her go nowhere).
Aside from it not being over, *so many other stories* do that. Especially EU ones. Characters cannot hang around just known characters. The last rebellion comic did that too, I'm pretty sure the 80s SW comics did as well.
Climatic plots that quickly fizzle out and become anti-climatic.
A legit complaint, but no Waru.
Creation of whole new world (Arrochar), and then they turn into nothing.
Ok, here I have a complaint: Not creating new worlds in SW is a problem. It's supposed to be a big galaxy, almost everything should take place either at a new world, or one of a very small number of major-major worlds.
Visiting new worlds that turn out to be not-galaxy-shaking is a good thing in my view.
he creates so much stuff, and then it drifts away.
Yea, some writers do that. Often it's to set up later returns (keep in mind he might've been planning for longer than he's going to get), other times it's sloppiness, but it hardly strikes me as the greatest sin in the EU! There's countless dropped plot points out there.