First thing is you could try and gamble or craft items to replace your yellow items. That will go a pretty long way to upping your overall damage.
Next, personally I'd toss that Sankis into your main hand, missing out on 5% crit chance you could have. I know it has overall less damage than the Fulm, but, Sankis is about the best fire weapon there is (for 1h) so I'd just get used to it if I were you. Next I'd trade avalanche for overpower (with the fire rune). The fire one deals 760% weapon damage on a 10 second cooldown. It synergizes well with frenzy and HoTA because the cooldown can be lowered each time you crit with any other attack. You can usually get a good 2 or 3 OPs in the time you do one avalanche. Not to mention it hits harder than HoTA.
Lastly I'd ditch call of the ancients for other options. When I was at your gear level I used WW because a) it works as an escape tool (allows you to move through enemies unhindered) and b) allowing you to move unhindered makes it an amazing positoning tool for both HoTA and OP, you can move through mobs or get in the center of them and go to town. Other alright options would be leap with the rune that pulls guys to you or ground stomp with the rune that pulls guys to you.
Extra lastly if you are going to keep Battle Rage you should switch to the Bloodshed rune. It makes it so your crits do 20% of the damage to every nearby target. Just think about that for a second when you HoTA a group of enemies and hit them for say 10 million each. It builds up fast. On that same note area damage is a godly stat for HoTA/OP, even though when I was your level I put my utility paragon points RCR (which I assume you might be) in retrospect I wish I would have put them into area damage. Having your massive HoTA/OP hits deal 50% of their damage to everyone nearby is fucking nuts for clearing groups of enemies.
For reference,
this is the build I used until I finished the charge set. Solo I could do Torment 4 with it, but, T3 was what I would call "efficient." As in 10-15 minutes per rift. For long term goals, getting the charge set or the EQ set is a must. Sadly (like other classes) our fury generators are actually fucking trash at generating fury so you want to find a way to ditch them which both of those sets allow you to do.