I want to try to conduct this thread is as civilized a manner as possible and refrain from the childish whining that is rampant in Arms QQ threads.
As an Arms warrior in ilvl 518 gear atm (just came back to WoW 2 months ago after a 2 year break), I've indeed noticed the lack of arms representation in ToT. A quick run through of World of Logs and Noxxic dps rankings confirmed the fact that Arms is in fact the worst spec in the game at the moment, aside from Frost DK (single target).
Time and time again, we've heard Blizzard explain how Arms was essentially impossible to balance around single target, as it would give Arms PvP too much single target burst, and thus make warriors overpowered in PvP. I understand that rationale completely, and agree with it as well to an extent, although a quick run through Arena Junkies' posts now has me thinking differently. According to Arena Junkies Rankings, there is not a single warrior represented until the 98th ranked team, with very little warrior representation after that as well: http://www.arenajunkies.com/rankings/3v3/
After speaking with some high profile warriors on Tich and Nerzhul, who were quite reasonable with their discussions with me, it was indeed confirmed that Arms is in fact underpowered in PvP single target as well, making it an essentially useless spec.
In 5.3, as you know, Arms is inferior to Fury is almost every way. Single target damage is inferior to Fury by about 5-6%, and aoe damage is much, much worse. At the moment, the only situation in which arms can really shine is 2 target boss fights such as Council, although they are still trampled by Demo locks and Mages. In other words, Arms has no niche so to speak, not even in PvP, as is pretty much sitting there and collecting dust.
I applaud Blizzard's efforts to restore Arms' relevance by giving it some spectacular cleave capabilities in 5.4. Bladestorm has also been improved, although according to calculations in my previous thread, it remains about 14% behind fury. Single target damaged received a very modest buff, giving slam 10% more damage when the CS debuff is up. Seeing as slam isn't exactly high on our priority list at the moment, this is a 1-2% damage increase at best.
I understand what Blizzard is trying to do: Give arms a niche in which it excels strongly, making it situationally viable, which is better than what it is currently. This is better than nothing, but truth be told is won't make much of a difference, and here's why:
Since fury is still superior when it comes to AOE beyond 3 targets and single target damage, which let's face it are the majority of situations you encounter in a raid, Arms' can only be utilized maybe 1 or 2 encounters in SoO. It becomes pointless to gear the spec during progression, as the gear/gemming/reforging requirements are different between arms and fury, and as a result people will stick to fury and neglect arms once again.
What's the solution to this debacle? Buff Arms Single Target
It's still behind in PvP, it's going to be even more behind in PvE, and it needs a good 5-7% more damage in order to be competitive in both PvE and PvP. In the last set of Blue Posts, Blizzard talked about trying to buff arms without making the buff "boring". I'm pretty sure that I speak on behalf of all arms warriors that the spec is entertaining enough, and we would much rather have a spot in raid nights than a slightly more interesting rotation. Buff slam, give our deep wounds slightly more damage, buff mortal strike, I don't care. We're sick of being on the sidelines due to fallacious logic, and we'd like to see some fairness on your end in 5.4 when it comes to Single Target. Otherwise, we're out another patch.
What do you guys think?