That's all fair. I just think of metaphysics as physics potentially not yet realized, and quantum physics has at least put forward the idea of the possibility of extra possibilities beyond things we can currently conceive.

Regarding things that may not be currently falsifiable, I think it depends on the idea. Sometimes the ideas are useless to consider, sometimes we may in time know the truth of them, and some of them are just left in a state of "remains to be seen". In that sense, a lot of that kind of stuff is in the grouping of things I don't necessarily believe in, but are interesting to consider, may be verified in the future, and aren't necessarily worth tossing out straight from the get-go.