Originally Posted by
Marrilaife
Too short.
Too much movement required on Odyn / Helya.
Progressing mythic Odyn with too many melee / immobile classes was a complete pita, and it was first boss, because the raid was so short there was no usual "simpler, early introductory bosses".
Helya pre-nerf on heroic was harder than some mythic bosses in EN, which should not be the case (heroic is aimed at different audience than mythic).
Helya mythic was another example of "bring specific classes or have 3 times harder progress", you needed 2 priests for mass dispel (preferably shadow since their mana is not a resource you need to conserve), some immunity classes to solo tentacles and preferably a couple of dks to grip the mist-whateverthename-caster-ladies. Oh, and also specific aoe classes that had easier time to get down the blobs. I personally hate bosses that encourage you to class stack to such extent. I don't mind if world first guild class stacks to "cheese" something but when that becomes the only viable tactic or the only "doable by non godlike players" tactic or "10 times easier than any alternative", then sorry, it means Blizzard only caters to top guilds who split run and class stack and not the average guild where players play 1 class and stick to it.
For that same reason if by 7.3 mythic Avatar and KJ aren't changed in a way that stops encouraging you to bring 5 rogues, I'll be very sad. No standard non split running guild keeps 5 rogues on the roster, they will always have a spread of different melee classes, maybe 2-3 tops of the same one. However I do expect these bosses to be nerfed in one way or another, so we'll see.