Currently I only have one Legendary as I burnt out near the beginning the expansion, only logging on for raids. That would be Pyrdaz. As for trinkets, not very many unfortunately, and none that are DPS. I have the Grotesque Statuette and Goblet of Ichors which I used for most of Emerald Nightmare, and currently use the Goblet + Animated Exoskeleton (The one that drops off Skorpyon). The only other Trinket I have access to besides those three is
Infernal Contract (895 ilevel) from Gul'dan.
I guess I always focused on gearing myself more towards survivability than dps, as I never enjoyed that role on its own and wanted to be as easy to heal as possible. I just thought to be parsing so low means I was doing something wrong at the core level. After all the stigma against Maul I just sort of wrote it off, but I'll definitely try to use it when OTing and theres no use for my rage at all.
As for the threat, I've been noticing some improvements ever since I caught up in gear with my Demon Hunter co-tank, but he just seems to be able to put out so much threat. Is this an actual issue with bear threat? For instance, on aoe trash pulls, there is no way I can straight up pull threat off him without taunting, even if I'm focusing on one mob. In fights, taunting and mangle + pulverizing usually gives me a big enough jump that he cant catch up, but it can happen. Not sure why Guardian threat just seems so gimped.
Anyway, appreciate all the feedback, and sorry for the wall of text!
*EDIT* After writing this, I got Cinidaria, the Symbiote from an emissary cache. Doesn't make much of a difference since I only had one legendary, but I suppose it should help with my dps. Atleast it isnt Sephusz!