> I'd like for list owners to have control over list moderation at a
> much finer level so that responsible subscribers may freely post,
> but troublesome subscribers require approval for each message.
This can be done with the existing version.
What you do is create a file of those you want to be able to post freely
and use this as the restrict: entry in the config file.
I routinely do this for the listowner on my restricted lists to avoid the
listowner having to approve her/his own posts, but it could be extended
to more than one person.