I'd apreciate you having a look at mine and doing the same if thats cool? I'm not sure what my profile is, but I've got you on my friends list if that helps (should be Hzza in game I think)
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I can run T2/T3 but I'm pretty sure this is mostly due to the damage buff from the Calamity. At the moment I'm farming for money to upgrade my gems and I'm trying to get my crit chance up above 50% without my all res going through the floor but wondered if there was anything else I can do on top of that.
Nice Calamity, is the socket rolled or natural? If natural I would be re-rolling hatred regen into % damage (once its fixed). Either way, it should be in your main hand as some skills use mainhand weapon damage to determine their damage,and it has higher dps than the Izzucob.
Ring of Royal Grandeur could replace either of your rings and allow you to lose 1 piece of Crimson set and still keep the 3 set bonus. Farm Act I caches for this, and you may pick up a decent Golden Gorget of Leoric at the same time.
Once you have the ring, I'd probably swap the belt out for one of Harrington Waistguard, Witching Hour, Cord of the Sherma depending on whether you want pure damage or a useful defensive effect.
Your other ring you should be on the lookout for a Stone of Jordan with fire damage and crit chance, or a well rolled Unity.
Keep making Reaper's Wraps, you are lacking fire damage on the ones you have and farming Mathiel is quite easy. Also keep a look out for an amulet with fire damage as well, you are missing 40% extra fire damage across these two slots alone.
Finally the Izzuccob could be replaced with a better legendary such as a Helltrapper (Act V caches) or even a crafted one such at the Hallowed weapon. Izzuccob by itself has no legendary effect so its just a high stat potential hand xbow.
Anything else will be down to luck, ie Natalya's or Marauder set items which you cant target through Kadala or caches. The Marauder 4 set bonus made T3 go from quite tough to trivial for me.
Also if you have Danetta's hand xbows dont underestimate the usefulness of the set bonus. Its basically infinite vault and makes bounty farming extremely fast.
It looks like your pride's fall has not been re-rolled. You should roll life % into a socket since you can get 23% with a max level gem rather than the 15% max on a legendary helm. Alternatively you could roll the gold % into a single resist for a bit more toughness.
I'd question the benefit of Hungering Arrow/Archery vs Entangling Shot/Cull the Weak since most of your damage is going to come from CA anyway and with Entangling Shot you can proc the slow that feeds Cull the Weak, gaining an extra 20% damage.
Personally I'd also swap perfectionist for Ambush and change your pet into a Boar. You will get 20% all res from the boar rather than the 10% from Perfectionist (yes I know about the armor and life% as well), and it can also tank for you which helps in higher torments. With Ambush you have +40% damage against every mob on first hit which is worth more than +30% every 30 seconds in my experience, especially if its tipping you into 1 shot territory.
There are other ways to gear but if you are going fire/CA then this is the easiest route for you to go.
Good luck
I play under name Blomokk 
