Eternal palace was also amazing, as the new raid is pretty cool too.
mechagon and nazjatar were supposed to be timeless isle like, and they were even better cause you could fly there, so no "Shit hulon is up but i gotta go here to here to get to him."
You will not beleive how many times i was down below, or at the frogs and saw "hulon pulled!"
then by the time i killed what i was fighting, mounted up, ran to him, got stunned twice by the charging bulls, he was dead.
also every new expansion is do your dailies, do your weeklies, do some raid.
when blizzard adds new stuff like... mythic plus to make dungeons relevent again, or islands or warfronts, any new content, people like yourself well get mad.