Single/AoE Hunter spec balance

The purpose of this analysis is to determine an appropriate talent strategy for Heroic Sha of Fear, in which there are a variable number of adds (initially none, then proceeding to spawn in incremental sets, up to 8). The goal is to get a general representation of of the strengths of each spec in degrees relative to other specs. My method was to use my spreadsheet in current gear to get these numbers although I admit that the AoE portion is a bit more crude. It really only models an "all out" DPS strategy in which you do as much AoE as possible. This doesn't work well for BM which has a loss of return after getting Beast Cleave at 100% uptime. I'm not too concerned about this because it's really a reflection of just how bad BM aoe is - you'd really want to execute a single target rotation except you occasionally use a multi-shot instead arcane shot. If AoE is expected at all, BM just won't cut it - you're better off trying to balance somewhere along the line of SV-aoe to BM-single, while SV-single to BM-aoe would be a line that runs perpendicular to it, so to speak.


SV 1 3 4 5 6 7
barrage, toth 109,309 141,195 173,579 205,983 238,377 270,771
barrage, dire beast 114,821 135,362 165,346 195,330 225,314 255,298
glaive toss, dire beast 116,611 132,277 163,262 192,246 221,231 250,216


barrage, toth 119,726 79,961 119,730 136,493 153,256 170,019
barrage, dire beast 125,860 78,136 113,425 128,687 143,948 159,210
glaive toss, dire beast 129,479 77,427 11,713 126,012 140,310 154,731
SV aoe starts being better than single target SV or BM relatively quickly. If AoE is worthwhile, you're probably better off with SV at a relatively low number of targets. But if the DPS check on a particular target is tight enough, you may be better off using a single target spec and letting others deal with the AoE.
It's hard to argue against having SV switch to adds later than 4, without seeing what sacrifices other classes would need to make to be in their AoE spec. SV aoe spec is about 15%-18% less than BM single spec, on a single target, but almost 90% more on 7 targets. I think it's hard to argue that you should wait more than 4 targets (if that) to engage in AoE if you've already invested in SV.
Another thing I don't have, because it's much harder, is a perfectly clear idea of how much damage we can do to a single primary target while doing AoE. I think we're primarily concerned with SV here, so I'll use that spec and provide some data about its spells.
Dire Beast 198,151 33,025 9,908 198,151
Stampede 253,772 12,689 705 253,772
Black Arrow 222,616 14,841 9,276 222,616
Murder of Crows 280,888 9,363 4,681 280,888
Serpent Sting 67,596 37,553 37,553 67596
Pet -- 12,688 12,688 --
DPCD here is damage per cooldown, or really, real DPS - not just DPS while the ability is active. So not including Dire Beast (since we'd have Thrill of the Hunt) we'd have a minimum of 64,903 DPS going on the boss still.