Hm. The
ietf-ssh%netbsd.org@localhost list was used by the original secsh working group and has served as a forum for ongoing (if quite low-volume) discussion since then. Why not reuse it, instead of setting up a new list?
The scope of a maintenance group like this should include discussion and evaluation of proposed extensions and revisions. Of course, actually working on any such proposal would require a charter revision, but IMHO it should be clear that this group is the right place for such discussions.
-- Jeff