Please don't take this as "OMG you suck!" this is just my personal opinion.
Your spec seems Ok. Personally i would change quite a few things with it.
Knee-Capping. In my eyes, it's just not needed. In group PvP, there's X amount of classes who can root and snare, basically making the ability useless because the enemy will most likely already be immune from other players, or your own leghold trap, which lasts 10 seconds, and not 3.
improved Immolation combo, that causes nothing but trouble. Raiding mobs, you fear an add cause a healer got aggro and it fears off into a pack of 3 mobs who get burned... raid wipes, no fun. It doesn't do enough damage to warrant the 3 feat points in my opinion.
Personally, i think Fire Stance is crappy. It didn't work a lot for me, and the extra damage was very low and didn't seem worthwhile.
Lastly i'll link my own personal spec, so you can see the difference between our builds.
http://www.conanarmory.com/feat.aspx?id ... e4fe2f4ef4Like you said in your App about opening with Volley and Flame Barrage, do that with Critical Aim mid-way through the combo and you're laughing.
Overall, nice app.