I'm just wondering why, in a level 70 moonkin build, would a druid need imp FF? Most of the meleers/hunters are going to be hit-capped anyway, aren't they?
its mostly a raid boss talent. the chance to miss a raid boss while dual wielding (i.e. pve damage specced rogues and warriors) is ~24% for white attacks and ~8% for specials. its not feasible to stack 24% hit, so in effect imp FF amounts to a 3% damage increase to the white damage of every rogue and dual wield war in the raid.
depending on your raid makeup its either a great support talent or a waste of points.
What number of DW melee in the raid would you suggest having before speccing Imp FF? We usually run with 3 rogues, and either an Enh. Shammie or DW Fury warrior.
I don't see it being a very viable talent for 10 mans. Although for people just starting Kara it would really useful. It would help the tank with TPS and give rogues and druids and hunters increased dps... you get the point :P
My issue is for 25 mans, where all melee/hunters in the raid have the minimum +hit of ~9%