As the titles says ....
In Season 4 main high-end activity is "The Pit" , similar to Greater Rifts of Diablo III but with way more hard and one-shooting fest mechanics in the bosses , apart an insane HP pool .
I´d been pushing to +90 with my 1st character , my shadow Summonmancer of the Eternal Realm that got really buffed . Now ill taka a break in pushing . I´ll play my seasonal new character and gear my other Eternal Realm characters . For the crafting items farming around level 75 is very comfortable speed-run for this spec (not the Golem broken one that will be nerfed but shadow minions damage) in this patch .
So far "The Pit" would be as good as the "Greater Rifts" of Diablo III but the gauntlets feels a bit trivial now and is the bosses who are way too overtuned right now in their HP and in their one-shoot mechanics spamm ... and i hate the one-shoot mechanics in any kind of ARPG or RPG . They moved them from optional Uber Lilith to the Core of the game now , most classes-specs will have a hard time to solo even a "The Pit" level 61 , at least in this patch 1.4.0.