Haven't had a hard boss-fight since Vanilla WoW.
Games are too much on rails, and people whine if they can't oneshot a boss in a pug, while they watch footie on TV at the same time.
But I have no doubt that all challenge will get watered down fast. Unfortunately that's how it always goes these days =(
Maybe if you'd like to suggest a strategy to said people rather than "You suck don't whine" then your precious challenge might be maintained.