most guides will omit uber uniques

I die maybe 3x doing t100 carries on avg using Lysander, esu heirloom, blue rose, soul brand, Thibault will and legendary stuff to push def to 10.5k and hp to 12k. Snow veiled (helm), mage lord (neck), ancient flame (ring) and gravitational (glove) serve me well enough that I just have to be tactful and only blame myself for not playing correctly. Feels good when Lysander procs conduit.

Idk for me conduit is a nerf not a buff it only slows my clearspeed.
And I think that is better to use dagger/focus than Ahavarion, you can get so much extra: 2 aspects, more damage nodes, more cdr and mdr, etc.
But anyway ball lightning is just op this season, so you can do whatever you want with it and still do all content.

Bro, it's not a Forza or Gran Tutismo lol, you're forgetting that we're killing mobs in the meantime...
I can bet wuth you, that ill kill any endgame boss faster than you with godslayer, than with shako, also i can bet that with standarized gear i would push higher than you in nm dung using flickers and shako combination, propably would do it faster aswell.
Like i wrote before, i have tested it and on 4ppl duriel with shako it was smth around 2 min, with godslayer it was even below 1 min sometimes.
And its not only about main bonuses from theese uniques, look on secondary stats aswell, or even better, test it yourself.
Cheers

As I thought there is something wrong with your build. With or without shako, it wouldn't take me a minute to kill duriel on p4. I suspect you don't have enough crit chance and damage and not using devouring blaze with fire bolt enchantment.
I am carrying tier100 nm dungeons and it takes me 5-6min to 95% clear. Let me know if you're doing it faster. Flickerstep are competitive, but unfortunately nm dungeons are not dense enough to fully utilize it. 50% of the time you're just running from pack to pack or through long corridors, so I only use ulti where is a large pack of at least few elites, other time just ball lightning is more than enough to melt everything around in a glimpse.

You're right partly, build isn't finished yet, soso is my 2nd char atm, but as soon as i'll max out all glyphs, ill pm you avg time of 4ppl t100
But aside of build, just switching shako for godslayer made me kill duriel almost 2x faster avg so isn't it proving my theory that it's better helmet for bosses?
And about boots, i see that we have a bit different kind of gameplay, im used to dashes from rogue and with flickers have very similiar gameplay which i really like, on top of that i have ult almost all time up and ofc big close dr from flickers.
Still using esu's on bosses tho.