@darius @d3cline

However, if you manage to come up with a simple/unobtrusive solution to the accessibility problem with #5 (as described above), then you could conceivably avoid the confirmation step in #7 as follows:

7a. Filtered list member display -- use the same treatment as #5 here. Essentially you somehow divide the accounts into two subsets: those who are only filtered because of this list vs. those which are also filtered by at least one other list

Hmm ...