If you intend to focus on your conq and gear and aa level it as a main i would suggest getting a third spec from the item shop.
And then run ,
DPS carnage build,physichal tanking build,magoo sparkles tanking build.
That way you can maximise feat points usage without trying to do an 'everything spec'.
With regard Furious strikes the crit buff is really nice,with hoarfrost technique and some mid range gear and a crit pot its easy to sustain 25/30%+ crit chance.
http://aoc.yg.com/feat-planner?class...012-24,4015-21 as an example for something physical.For magoo sparkles switch the points from armour to protection.
Combos i use are beseige, 2 ranks of feint and gods.