Unless you are unlucky you can get 3 Kymon/DV nem spawn from full-clearing Tomb of Archon and Fort Haron, but clearing all the Cronley gang gets you only 1 nem spawn. Barrowholm is the same story as Cronley.
Cronley and Barrowholm nem spawn rate should be increased so that we can get 3 by full clearing. They both have better boss/hero density and more MI variety than Kymon/DV so the exact same rate might be inappropriate but they at least deserve noticeable nem spawn rate buff imo.
I did some Cronley and Barrowholm nem hunt runs and I think I have better understanding of nem hunt for the 2 factions now.
Firstly about Barrowholm, I find it very odd that you can spawn their nemesis only inside of Forlorn Cellar/Den of Wendigo now. I def remember that Reaper could spawn in all over the Ugdenbog area by killing wendigos but I can’t spawn them AT ALL outside of the cellar now. If this is not a bug then BH nem spawn rate should be brought up to the level of Kymon/DV (2 or 3 spawns by full-clearing, currently it’s 1 or 2 by doing so) imo.
For Cronley, by full-clearing Arkovian Docks you sometimes get 1 sometimes 0 spawn, even with no spawn you have enough kills to get a fast nem spawn in elsewhere tho. Honestly maybe not too bad considering that Act 2 Clonley areas have great boss density, but either increasing Arkovian Docks density or buff a bit of overall Cronley nem spawn rate would be a great change anyway imo.