Looking for suggestions to upgrade my 2H Sunder Zerker

Hello!

I've started as a ground slammer (i was one in beta, domi and ambush). So many changes in this game that im a little bit sorry i didn't try something new instead of following the path i knew (turns out everything changed too!).

My build is fine, its clearing 300iiq t17's but of course theres always room for improvement.

The most i struggle with is ubers. Searing exarch and sirius are the most problematic because they both simply one shot me. Exarch does that with the anihilation (doesnt matter that i run 2x faster, opposite ways, whatever). he always autoaims and just one fire projectile is enough to kill me with 90% fire res, fortify stacks, 6 endu charges and freaking progenesis on top. I see most shield users just facetank this! Isnt it kinda overtuned? Same goes for Sirius. Once i die just once he then offscreens me with death beam before i even see red on red...

Its very hard to fit any spell suppression into this build, and even then it wont be 100% for sure (and it will still prolong my life from 0.2 to 0.4s...)

In terms of DPS its also hard to scale it, as linear stacking doesnt do much. For crit i would need to use flesh/flame with jugg acc passive and some acc on gear plus find multis god knows where :( Theres also no space for that in the build without sacrificing survivability.

I also dont like echoes. Most juiced maps have lots of debuffs and/or reduced defences. Stacked with atlass buffing them even more it usually does a lot of harm to me considering attack speeds i have. It's surely made for big bonks with slow attack speed and then works wonders but i preffer a classic helm. (not to mention much needed mana cost redution from yellow helm).

Maybe theres something else i could try without completely scraping this one? ;)

Thank you for any input.

https://pobb.in/78mZB9Vk2Uf_

Here's my pob. Im switching some stuff now and then but basicaly its 88-90% allres, 6 endu, around 6-7k hp and 12-20mil dps.