i haven't even thought about this
"PvE-wise i think Feral Charge (Bear) is gonna play a very big role in a cat dps rotation in a fight where you have to move a little bit. Haste is also increasing your energy-reg-rate and 30% more haste for 8 seconds doesn't sound that bad for a global.
And yep, just like Blackmagic wrote, Rake and Rip will scale with haste-rating. "
if a successful bearcharge will really haste energy regen.. waoh well i like it