Another fail world boss design, news at 11.
Trying to copy the concepts of world bosses in a game that used instances in the first place to get around the problems that previous 90s era design games had. WoW wasn't the first to instance but it was the first to succeed at it. (I left a rng instance slow leveling game for WoW beta in 04 and never looked back. They also had epic fail outdoor raids with gauntlet runs along with rng spawns or stupid day+ timers)
A true world boss/raid area is supposed to be hard to spawn/get to in the first place, it solves a lot of the random zerg/leech/lag/etc problems. They still suck overall though, which is why so many people left those games for WoW 1.0
World bosses are like making fancy horse drawn carriages in the age of internal combustion. Sometimes interesting to ride in a park for fun, not something you buy.