| Tequatl and TA Aether are both great because they're challenging, what's wrong with them? | 
    
 Tequatl isn't fun at all because you're forced to fight him in the open world where you're  playing with a bunch of afkers, idiots who won't listen to directions or do the fight mechanics, and people who try to grief the fight. I love challenging content, but putting it in the open world where you have to deal with people that suck with no way of kicking them, and not being able to play with your friends or guild due to overflow issues is just stupid.
If he was an instanced raid or something the difficulty would be ok, but forcing it to be ran with random people makes it stupid.