after doing a full clear of heroic, then a partial clear on my alts i think some of my initial thoughts that Bear > all is a little flawed
very few of the fights cater to Bears this tier, a few fights are actually unfriendly to bears like dogs/coven/varithmas. Bears and Monks will have the hardest time on Varithmas and Bears will have a difficult time on coven/dogs. some of the movement speed buffs they provide are good but are only *required* so far for misplay and not for just accomplishing mechanics. War/DK/Pal are exceptionally strong on the fights that the monks/bears will be lacking.
I ran SI ring on my druid and tanked up to aggramar on heroic, the debuff that coven applies is all magic damage so every 3rd fiery strike i needed either SI or Barkskin up, even calling for externals there is a chance you'll get trucked by the third strike (the swap) and then due to mechanics you'll occasionally need to take a 4th stack which even with SI does about 60-70% of a bears max hp (on a 935ish equipped bear) while on the monk i can reliably take 5 stacks without using cooldowns and just relying on mystic vitality and external healing.
right now i think Coven on heroic is a little overtuned, there are possibilities of really shitty overlaps, like getting whirling blades spawning on the safe zones, or getting all of the safe zones spawning on the outter ring when you get norgannon's adds spawning, or vice versa and getting all the safe zones in the middle during khaz adds. the overlaps are probably more difficult than any other heroic fight this tier with the exception of heroic KJ. Aggramar may also be a little bit overtuned, and right now 100% requires a DK to be done correctly (you can do it without but it requires some shitty shitty positioning).
predictions (hopes) for tuesday hotfixes;
T20 for most classes getting nerfed (please do this nobody wants to farm ToS anymore for titanforges)
affli warlocks getting toned down
fix monk trinkets, legendary trinket has a 15-17% proc rate currently, where other tanks have 25-32% (we all know this won't happen until half way through this tier, the same as it did in ToS)
buff monk t21 to actually do something (hoping that since literally no BrM is wearing it, they'll fix it)
injector trinket from Kin'garoth getting nerfed a bit
coven damage decreased by about 10% on heroic
fiery eruption on aggramar doing 50% increased damage instead of 100% increased damage.