PoE jawvice builds

Boys, here is my super tanky ascendant gladiator/necromancer phantasm build. It is somewhat slow and ppl have genuinely laughed at me in game for playing it, but i like it and if you are looking for good survivability it is not bad at all! Dps vs AN rares is great (2,2m), but the build struggles with damage vs uber bosses (600k), so any tips on how to increase damage while not losing survivability are welcome. I am adding a video of a t16 map with an expedition inside, and POB is here:

Looking for advise from experienced players how to improve this concept.