i definitely like the world boss concept. it adds depth and fun and RP.
when i first saw the storm giant in howling fjord and thrym in zul drak i thought those were going to be them, and i was eager to find out about them.
but of course i figured out that they add nothing but atmosphere to the area. they're still pretty cool in that regard, just not as fun.
how to not have guilds racing to farm them though is tricky. that would basically be asking people to not care about loot and progression. maybe have the loot they drop not be traditional loot, but instead be like a token that can trade the cosmetic appearance of their shoulder slot item or something. or having the loot that drops be BOE.
or maybe how about not having the world bosses spawn on timers. maybe they spawn randomly like the current rare spawns do? just thinking as i go here..
also, RP wise it doesn't make sense to kill the same boss every week. maybe make the "boss" an invasion event or maybe an unnamed lieutenant of the black dragon flight. something that makes sense that it can come back over and over.
one more thing to suggest though is to please don't put any achievements in for killing them. that right there is going to make a lot of people feel left out.

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