1. World buffs are entirely optional.
2. Pursuit of world buffs generates huge amount of content of different types in vanilla, which is already sparse on content compared to the later game.
3. Adding any Quality of Life around world buffs can only remove from the game, not add to it.
4. World buffs are no longer a thing from TBC onwards.
Compare your "QoL" request compared to something like removing the Onyxia attunement. Players can still do any and every step of the attunement, because it contains independent value or they may do it anyway for other reasons. Removing the attunement allows anyone to do the raid at any time, including on alts and, most importantly, you don't lose an entire raid in the future due to the group requirements along the stages of the attunement before you even step foot in the raid (repeat 25x for Every.Single.New.Player). It adds to the game, not detracts.