I mean SROs that aren't subject to full federal anti-bias rules, are allowed to refuse welfare recipients, that turn away unmarried couples, or reject children after 8 pm probably wouldn't really fix the problems that people want SROs to fix.

I'm not sure if > 1977 24 CFR 882 required private-bathroom retrofits means that SROs are required to have private bathrooms, which would absolutely damage the model and doesn't strike me as strictly necessary.