Would creating a shared calendar/reminder to which each household member subscribes work? That way, HomeView's view remains per-member, and each member's personal view contains their personal stuff + the shared stuff. It's a bit contrived, and I do like your idea of a home device identity that's functionally similar to the "calendar/agenda hanging on the kitchen wall" more.

I wonder how HomeView handles two people looking at the device at the same time. Like, whose profile does it pick? I imagine this is going to be a common scenario - a couple looking at the day's agenda together.