One thing I really like(d) about ICC is that fights are long and you get to really play your class, Do the mechanics and coordinate all the cool downs…etc.
Now with this buff everything is falling over and its starting to feel like molten core or naxx25.
So at 30% all the bosses would have 30% more HP and the fights are longer but are still fun with the inflated damage/healing/HP of players.
Interesting suggestion. Unlikely to happen unless they do Wrath classic+, which is not going to happen in the near future.
The buff is there to help even the worst guilds to get some heroic kills and even LKHC. So they won’t increase the hp. In fact, most people who still play just want to kill LKHC and quit the game.
It just makes it more difficult for the healers alone, who have to keep up healing those dps who will always find new ways to pull even more damage.
For the other classes the effect is 0.
So no.
This is your concern? Boss dies to fast? If you want people to play without buff, ask Blizzard to make it more rewarding if a boss is killed without the buff in the raid. Best way to make people remove the buff is by adding additional item to drop.