I like them. There was nothing that made class themed sets inherently better, and there were plenty of them even then that turned out awful. They're doing raid themed, those are aquatic, and they fit. Even just looking over them I was thinking about how I could mix and match some of them like that purple tint of the plate with the forsaken warfront gear.
Some of my favorite transmogs came from this expansion, particularly faction themed armor.
What he said. The well is pretty dry as far as class themed armor designs, so I am A OK with mixing it up if it means we get some actually stand-out designs out of it (again, like the faction themed warfront armor, which looks friggin' incredible, and I am a big fan of the leveling gear, even if I think Kul'tiras needs more prominent overcoats)