My guild got a first-kill Heigan in on Friday (yay and such), although the fact that we did it with 33 people in the raid is... a little disconcerting. Nevertheless, we started in on Loatheb after finishing up the other bosses we hadn't downed on Sunday, then tinkering with him for a few minutes at the end of the raid to get the basic fight mechanics down. We went in with a full raid and tons of consumables to throw at him.
We're making progress, although we do still have some issues (namely that our DPS isn't high enough and we still have people not popping the right consumables at the right times; we may go for some world buffs eventually, but we're not sure if it's worth the effort/risk)... but this is less about that and more about the fact that the fight design for this encounter is terrible. Just... terrible. Godawful, balls-to-the-wall suck.
What kind of idiot at Blizzard thought that a fight that absolutely REQUIRES heavy consumable useage each and every attempt/kill (and the consumable useage NEVER GOES AWAY, even with better gear, unlike the practice of popping DPS pots for some bosses and then stopping once they've been downed a few times) was a good idea? And to make it GREATER SHADOW PROTECTION POTIONS? The most difficult/annoying potion to farm, bar none? (Yay for requiring FOUR Fadeleaf/Gravemoss plus a Dreamfoil for each!)
I feel like finding the developer and smashing his face into his monitor. It's just... so... stupid. Creative idea at the start, but the mechanics/end result are just... retarded.
For those of you who are wondering, Loatheb is... an interesting boss. He puts a linked cooldown on ALL healing/shielding effects of one minute... which means that healers can't cast very often. Which is actually kind of neat - you get to set up a classic EQ-style CHeal chain, and the rest of the time the healers can (and should) be throwing up DPS. Moreover, during the fight Fungal Spores spawn in the room that give the closest five people a buff that increases physical crit by 50%, spell crit by 60% and reduces all threat to zero - or, to put it another way, "you gets to hits things hard".
The problem lies in the fact that he uses a raid-wide AE effect called "Impending Doom" (similar to Lucifron's magic AoE, but typeless - can't be dispelled) starting at two minutes into the fight and every 30s thereafter. As a practical matter, this means you start the fight with a Greater Shadow Protection Potion... pop another one at two minutes, then go through a variety of other consumables to ensure you stay alive (Healthstone, Bandages, etc).
It's... kind of creative, and honestly as a Warrior I'm one of the classes least hurt (the buff makes Recklessness a non-factor so you can use Shield Wall, plus Lifegiving Gem is essentially a free potion to either replace a GSPP or let you use a cheap one/health potion and Defensive Stance helps mitigate the damage if you pop it right before it hits) but I feel for my raid buddies who can't skimp out on consumables at all. It's... a rough fight in terms of consumables, and even if you one-shot him every week you're still blowing a rather hefty chunk of money in pursuit of a rather stupid encounter.
Sigh. The overall loot quality is garbage, too.