for the talents, if youre a hardcore bear tank, feral aggression is worth it for the -ap reduction. at least if you dont have any warriors wo are willing to demo shout (rare, but possible).
as for the bear nerf...well, it was needed. bear is the tank form, not the dps form. cat still hits hard (and it should) and bear still tanks well (and it should), so theres no problem save the one in the minds of the people who were enjoying good damage while having incredible armor and health.