There were a few things I liked about them. I liked the whole racist Emperor's illegitimate alien lovechild idea, though in execution it got a little goofy, I liked the general concept. I kind of wish the idea of the Palpatine disliking aliens, thus their limited presence in the Imperial Forces, had been a concept visited in the PT. I also liked Zorba's dread beard. The subterranean droid filled city of the lost children was silly, but also a cool imaginative space aged fantasy element for a kid's book.
Lando moving on to become the owner of a theme park was a hilariously corny idea, and is still amusing to think about.