> am I correct to assume it could be part of the standard Moodle release?
yes you are
> And now with my fund-raising hat on , if you do find that the these features allow you save costs to your clients, I hope you can build in a fee percentage that will go to moodle.org to pay for continued development.
This sounds like a promising deal . The needed changes become part of the standard Moodle release and I build in a fee percentage for moodle.org.