On the first point, there’s an open issue in Github. It just needs someone to choose to build it!
On the second, not sure. There are likely privacy leaks possible there, for example if I am in one of your aspects and you post something and select this option, it means that other people can see that I’m in an aspect of yours, which I might not want. And I suspect that it would involve a lot of work to create such a feature, with little benefit even if the privacy concerns could be dealt with.
It’s always worth using the search bar on both Loomio and Github before opening a discussion, to see what previous discussions/issues there are about the same thing.
I agree with @ryunoki , to avoid privacy leaks only the post’s author should see the persons who can view it.
That is point 1, which already has an open issue on Github (I think that was Ryuno-ki’s joke).
I don’t remember if there’s a checkbox when creating/editing the aspect that say “people can view aspect list”…
There is. But that allows people within one aspect to see the other members of that aspect; it doesn’t allow someone to see to which aspects another person has made a post visible.