4) I'm assuming their housing calculation comes from a single person/family renting and is not dependent on whether or not you have roommates and thus based on the split between them.
I don't see it that way. Turntable has its focus on turning people into DJs and finding rooms (genres) of music suitable to your tastes. The DJ queue system works well, and the feedback system too, as does finding a track to play. I wouldn't last long if I had to sort through a YT results page.