@Doomofman I threw this modlet together. It adds screamers to *every* spawn group. I tested it a tiny bit and I got about 2-3 screamers spawned in a small-medium POI (not a destroyed house, like a nice house). Without testing at night or higher game stages, it kinda felt like JaWoodles current streaming game. I tried making spawn rate lower and specific spawn groups and screamers were really really rare, hence adding to every group for initial testing. If you want to try it out and let me know how it feels (too many or too few screamers, etc) let me know! I feel the spawn rate is too high, but to make it better it might be best to try to remove it from several group s ( like animal groups...the screamer group itself, etc) but that will take some work
Edit: Its a 1 line modlet, so if you try it out and want to tweak the 1 setting in it and it "feels better" that what I have initially set, let me know the setting/number you used and I'll update the modlet.
v1.0.0.zip