-use 21 agil meta (which means you can drop 1 blue gem. the 10 strength/stam one).
-agility cloak enchant.
-you need 2 more skill points worth of expertise rating.
-my personal preference is glyph of cleave over execute, as i find i rarely use execute seeing as it doesnt hit as hard as blood thirst or slam. its just a filler for when everything else is on cooldown (which is nearly impossible to achieve with 4pc t10).
-agility/stam rep ring is better for warriors than the str/stamina version, you should change yours.
-you may want to consider getting tuskarrs vitality on your boots, as a general rule of thumb any fight that involves a lot of moving, a form of run speed enchant is a better dps return than an actual dps enchant. on stand still fights 32 ap is best boot enchant.
-in your current gear you have 538 passive ArP and 678 ArP on proc, if you were to swap out the majority of your strength gems for ArP gems to attain a total of 1399 ArP when your trinket procs, youd be at the soft cap and notice a significant dps increase. (you currently need to socket 183 more ArP rating, though that 3 rating isnt really important. so 9x20 ArP gems will get you to the ArP softcap.)
i have macrod my heroic strike to blood thirst, and i just spam BT to keep HS always queued up, while keeping WW on cooldown and feeding in slam procs. be aware that if you are on fights without a lot of incoming damage, you may become rage starving practicing this type of dps rotation. use blood rage at that time if you notice it happening.
other than that, its just gear upgrades you need to get. your weapons are bad, and the lack of a second berserking enchant is going to hurt you. not to mention that youre over the hit cap by 198 rating, so you could afford to drop that hit trinket complete and replace it with something like mirror of truth or a nobles deck if you can.