Really skeptical on the custom dungeon and raids they are advertising. I've never played Turtle WoW but those have custom dungeons too. How are those? I'd assume they're janky and buggy but maybe WoW custom content has come a long way?
These people are also advertising 1500+ new quests which I'm highly apprehensive about. I assume 90% of those are just filler "Kill 10 gooberbugs" or whatever instead of meaningful quest chains