During BC, my 29 hunter was built around Multi-Shot, moving in for Raptor Strike, then back out into an Arcane Shot. It proved well enough that caster twinks of my battlegroup started to try to keep at range rather than run up to melee to eat a burst combo that may or may not be accompanied by a sapper charge. The result was I was able to burst down alot of players for about 1100+ without Sapper Charges at lvl 29, which gave me alot of important kills on healers, flag carriers and high risk players.
At 19, Savage Strikes is available, entrapment and Trap Mastery are both available with hawk eye or Improved Tracking both available for filler points. Aimed Shot isn't available yet, the only utility available to hunters via talents being imp conc shot and Entrapment, everything else mostly just buffing damage one way or another. 20% crit chance increase to Raptor Strike strikes me as a damage buff that is reliable enough to count on when it'll be important for bursting a player down and that Trap Mastery + Glyph of Immolation Trap should be significant enough to be at least a major niusance. The fact that alot of favored hunter gear at this level includes strength along with agility plays a major part in my curiosity. Also, Raptor Strike is not a normalized attack and thusly has a high potential for front load damage.
60 - 91 Damage 3.80 Speed(20.0 Damage Per Second)+6 Strength+10 StaminaEquip: Improves critical strike ratingby 6 (+2.03% @ 19)
I took a peek at a few 19 Horde Hunters and noticed typically around 215 melee attack power. Translates into 15.35 DPS, or an additional 57 damage on a 3.8 speed weapon. Raptor strike tacks another 21 damage onto that and has that 20% crit chance bonus if specced for it. High End Damage would be around 169, low end around 130. Crits push up past 300 damage easy.
At 200 Ranged Attack Power, your trap gets a bonus of 20 damage, so around 125 damage over 15 seconds. + 30% from Trap Mastery= 162.5
162.5/5 = 32.5
32.5*2 = 65 Damage per tick
65*3 = 195 Damage over 9 seconds.
Not mitigated by armor and accompanied by a root effect.
Using these as filler between Multi-Shot/Arcane Shot cooldowns has some nasty potential I'd like to explore.