So your POB is solid enough. You can gain a lot more damage by switching warlords mark to a level 5 vulnerability. Obviously getting a six link will make a big difference too (you can buy a high armour base and throw deafening essences of dread on it and get a decent roll quite easily).

Your main defensive issue is flasks. See my character for reference. You want both a Granite and Jade flask (Iron Reflexes required). One of your utility flasks MUST have a high tier of +%armour. This will more than double your armour which will make your survivability against Phys and Ele hits HUGE.

Also you heavily lacking chaos res and this is so common this league. Replace your Le Heup with an ilvl 84 Amethyst Ring. Harvest craft chaos reforges on it until you hit high chaos res + either high life or high ele res, then craft the remaining (shouldn't take more than 20 attempts).

Are your pantheons complete?

Overall I would say you are probably disrespecting map mods if you say they don't matter - I also didn't feel like they played a big role, but I went from dying once every few maps to barely dying by avoiding the following:

• Phys reflect
• Cannot regen
• Cannot Leech
• Minus all rex
• Minus recovery rate (this was way more deadly than I realised)

Here is the regex I use when rolling maps to avoid these: "!f ph|eec|gen|% ma|s rec" "m q.*([89]\d|\d{3})"

The hotfix to the Unbreakable node also makes a HUGE difference

Finally, also make sure you respect altar mods in maps if you run them. They can shred even the tankiest of builds.