Message to User:
Congratulations on saving a whooping 8 characters by shortening 'energy' and 'mangle', while making the post unreadable in the process.
Actually, the 'Mangle Bitch' can perform the proper rotation as it should attempt to keep mangle up 24/7 anyway. And yes, the buff to the non-mangling individuals' damage is pretty damn large considering mangle only costs two less energy than shred (yet shred has a larger multiplier). This gets compounded when you look at the topic from the perspective of "one of us was probably tanking earlier and is wearing tank gear whereas the other may be wearing dps gear; the loss of damage that the 'Mangle Bitch', wearing tank gear, may be experiencing is vastly outweighed by the increase that the dps-geared feral is receiving".
Well, actually, proper rotation does not keep mangle up 24/7. You let it drop for a few pulses while waiting to rip/mang at a high nrg amount. But you are the above poster are right about 2 full-time-feral-druids being unlikely, so the previously-tanking-druid can be mang bitch and just not wait for as much nrg.