Re: PoEs - having a three-player PoE in a game where there is likely 4 scum, and admitting they three are likely not partnered, suggests it's not much of a PoE. Who else? Who could be our partners? Who are you townclearing?
Re: the rest - basic scum theory is to not strongly read partners, except in specific circumstances, but instead slip them into the hazy bits of their reads lists. Like, if I'm scum, who are my likely partners? It's maybe one of my stronger reads (SS, Intoews, hoggers, etc) but then a couple people I've avoided giving a firm position on.
If you're going to go down this route, keep going down it. Don't just throw some sh*t at a wall and stop there.