It's not worth it sadly
Fireclaw is one of those skills that is so close to being Godly but its not quite there.
Tbh in LOD it could put out massive damage because of 4pa bears with PB. They changed ias obviously, and now even the fastest possible can only get 6fpa. They made synergies easier but cut down the DPS by a huge factor.
It was weak comparatively anyways before and even worse now. Sadly
It wasnt weak before, i had one and it was insane damage the only drawback it was single target. Unfortunately losing the 110 ias pb for 4 frame claw ruined the build
I'm running Fireclaw Druid right now and with a Sunder and Infinity Merc I'm just one shotting everything and bosses are a few hits.
Crowd control sucks but I use fury for that, I'm also running a DestructionPB/Phoenix setup for pure fire and eTomb for 50/50
Not bad really, it feels like my fury druid but with a huge punch