Last league i played around with sunder and echoes of creation, was a little burnout but the damage was there as an STR stacker. Around 6ish life, max block 79/78/78 mas res, 40ish armour and 5 endurance charges. Since you generate rage with berserker it's not that bad to play, healing from the warcries is nice too.

But how to push further the damage? I got stuck around 7m damage and 1800STR.

Pushing damage was hard and survivability too since we cant block spells and suppression is too hard to grab, due to a lot of uniques.

Perhaps pushing to slot omniscience is the answer?

POB : https://pastebin.com/uRwG4baJ

*Note: my character is not assembled anymore, as i was trying diferent shit in the league but the overall idea is this, switching to echos of creation and resolute technique to avoid accuracy issues.