We're on the same wavelength. If this is to catch on, it should be easy enough for someone to just jump in and make some content without reading the manual. That's a big challenge in its own right: how much multimedia editing functionality can you make trivially obvious?
I imagine that would depend on how limited what you are trying to achieve is. You could make it pretty easy if all it did was cut up a lecture into parts (table of contents) & annotated it.