Great article. I used to require >20cM for the longest segment for <150 total, but I’ve recently reduced it to 16cM after finding that a couple of known, traceable relatives were in that area.
It’s worth noting that the new Tier 1 one-to-many utility on Gedmatch allows you to filter to only show matches with a longest segment greater than a given length. This is awesome for endogamous populations. You can set this filter and still sort by total cM, which is precisely what I want.