Ofc, everyone their taste, but I could look past the vibe if the gameplay was fun, sadly it wasn't for me. For me the diper gnomes.. the boring story, annoying daily quests and I really didnt like the area at all. We couldnt even enter mechagnome city without the instance. Nazjatar had other problems that were just as annoying, navigating was one and again.. the area was to small for what it was suppose to be.. both areas got old real fast for some reason. Nazjatar just had more to it, cus of lore, characters and it felt like a rushed experience for me. Mechagnomes had one big disaster and that was that they were not the mechagnomes people wanted.. so ye.
I can't look back and say wow that was a fun time in 8.2, remember this was mids bfa, the backlash and dissappointment over Rastakahn and Sylvanas being vage as shit only just started, nothing to do with 8.2, but something I remember well. This was early on when people already started to hate the story.