Comment 1 for bug 571904

The "sibling lists" feature (in particular, regular_include_lists) added in Mailman 2.1.10 can do essentially your first request (accept a list of lists whose members are automatically added to the recipient list of a post to this list) as long as you don't care about digest members.

See the section of the FAQ at <http://wiki.list.org/x/TIA9> beginning with "With Mailman 2.1.10 or later" for a bit more on this.

Will that satisfy this request?