It would be most useful to add two additional "Filters" to the Advanced Controls of the Family -> Lists capability :
There are currently 4 Filters: Claimed Status, Living Status, Gender, and Privacy. I propose two more Filters:
(A) Add a filter for "Collaboration Status". This filter option could have menu selections such as:
-- any set of managers. (Default)
-- no co-managers. (would only show profiles with zero or one manager)
-- co-managed. (would show only profiles with two or more managers)
-- no active co-managers. (would only show profiles with zero or one active manager)
-- active co-managed. (would show profiles with two or more active managers)
(B) A filter based on the profiles' relationship to projects.
-- Ignore projects. (Default: lists profiles without considering membership in projects)
-- 1+ Projects. (Only lists profiles which have been added to at least one project)
-- No Projects. (Only lists profiles which have NOT been added to any projects)
-- Member of: (Lists profiles which are a member of the 'selected' project)
That last option (Member of) could use the same "selection of project" pop-up which is used when adding a profile to a project ... perhaps with the constraint that only one project can be selected, if that is necessary for feasibility (although selecting multiple would be nice, then one might want to add an additional 'radio button' to select either an "OR" of the selected projects vs. an "AND" of the selected projects ... I currently would view the "multiple projects" as a nice refinement, but not a crucial piece of functionality).
