im having some strange experiences while tanking as bear in the last patch. my threat varies a lot from boss to boss, on some bosses i easily keep aggro by having 20-30% more threat then the dps and on some i have a lot of problems and have to taunt the boss when dps get aggro (in the same raid with same ppl dpsing). it's partially because of vengeance decay on tank swaps, but if that has such a big impact it's a serious issue with the mechanic.
another problem i had was that i found myself being rage starved sometimes when i macro-ed maul to my other abilities. the most strange example of that is when i tanked sindragosa 10 man and had to remove the maul macro to keep up my rotation and use it just occasionally. i have no problems with that as having maul macroed and never think about it is boring, but being rage starved on a hard hitting boss while having loads of rage on easy trash mobs makes no sense at all and it's a big problem of the new rage generation system in my opinion.
last thing i noticed is that ppl have posted about having huge dps as bears (hitting mangle for 15k and such) in the new patch. i have been practicing the rotations from the 1st post in this thread and i do it reasonably well all the time and still i cant make more then 4-4.5k dps on fights like saurfang in ICC. my gear is not very good as i returned to raids recently after a 9 months break, but such big differences cant be only the result of gear. is some1 else having having such dps with 250ish average item lvl or it's just me doing something wrong?