Granted, I think folks make waayyy too big deal about teams steam rolling things. Teams of superheros smashing things to bits is . . . pretty much the genre of superheroes.
I've always been of the opinion that there should be harder difficulty options if some folks find the current endgame too easy.
EDIT: Also whenever it's suggested those folks who just find the game too easy try fighting mobs like Rularu, Carnival or any of the other groups that can and will stop most steam rolling teams in their tracks, the response is often crickets.