Everyone played BM during siege. If there's one thing we do as a community, it's flock to one spec for an entire tier!
Imo, the RNG with frenzy stacks during Siege made the spec way more punishing/unrewarding than in this tier/expansion. This was especially problematic in boss fights where add phases were coming up, and you were trying to get the 5 stack to proc. There was also a long standing bug that impacted players who didn't use Blink Strikes that sometimes caused bite/claw to sometimes not happen (
http://www.jadesforest.com/2013/05/5...renzy-bug.html). Since Frenzy (and a good TED) were so important during Siege for parses, the spec, from what I remember, was slightly more frustrating than current. Still fun, but this implementation feels better, imo.
The current implementation is much easier to explain to other hunters and coach them through. So, for me and others who have to field questions on this, this iteration of BM is easier to explain and for people to master imo, with very few, if any, bad RNG components.