Hi,
It's great to see that extra care has been taken to ensure that the plugin is generic. I hope this is the correct place to suggest a feature for the plugin.
The PopCorn Maker application from Mozilla allows to create "dynamic video" i.e. adding of outside content from youtube, hyperlinks, inline maps at various points in the originally static video. This will help students/teachers (in fact anyone) to start with a basic video and enrich it with extra content from anywhere on the internet. This would work similar to the Wikipedia has been built by contributors.
I'd already started a discussion with details on the "Resource Types" discussion forum about feasibility of developing a Moodle Plugin. I then happened to chance upon your existing customizable plugin.
Adding Popcorn Maker capability could turn out to be a killer-app for both Moodle and Mozilla and definitely for the user community esp. students more comfortable with computers and video than writing text.
Thanks,
GuruM
by Gurudutt Mallapur.