I'm starting to specify specific feature requests for Drupal's playlist module, both Colin and Farsheed said that I should coordinate these requests through this Drupal feature request database.
If you have any PHP coding experience and are interested in helping expand this playlist module for other nodes and for collaborative film editing, then please e-mail me at kent@kentbye.com -- and I'll be sure to put you in touch with Colin and Farsheed. Or you can go through Drupal's tasking mechanism if you'd like, but drop me a line to keep me posted.