Sadness.
pConc is gutted and Endless Heist is ended with the removal of Book Of Regression.
Still, if you start Heisting at lvl60 for the chaos recipe then you can do about 4-5 heist per level and while you won't get reveals by the end, you can do it without XP penalty until like lvl74 (Whakano sells lvl67 highest, at that level the XP penalty free range is 7). which is like 60-75 heists and I was planning to do 90 anyways so my world is not ended, that's still a decent chunk of money.
I took some Frost Blade ideas most importantly White Wind + nothing in off hand and put together a build. As always, the rare items are garbage and hopefully the uniques are cheap.https://pobb.in/Y5jZp6rL8H6E As always, Beef/Wisdom of the Glade/Cloth and Chain annoints can help too. Southbound says "Your Hits can only kill Frozen Enemies" but totems are not you so that's splendid: some rares and act bosses won't be frozen but the totems will cull it. I think all trash mobs will be frozen.
Even without this change, chance orbs were not self sustaining and it'll be even worse. Hopefully we are early enough that people don't start chancing weapons into uniques for the crucible trees.
I didn't calculate with the power charges likely coming from having an Assassin's Mark. Especially because a Warlord's Mark for getting Rage and more zoomies might be a good idea, this is a damage setup.
Levelling notes: run a templar until submerged passage to get Ancestral Protector and Frost Bomb. If you run it from a temporary account the additional time is rather minimal -- and you can also get a second Quicksilver flask. AP is a huge, huge help from minute one except you won't have strength to use it, from level8 Nessa has heavy belts or you can pick up Primal Spirit which also allows using Frost Bomb. Use added cold damage before you get Nightblade in Act 2 after Sharp and Cruel. You may want to use Herald of Ice instead of Grace as long as that is feasible. Might be feasible even in Heist, this is up to taste, it's only about 10% eHP.