What I did was I completed the half-hour film, but before really showing it, I wrote two more sections for a potential feature film which I didn't think would really happen, but at least I had it in case.
I like doing them and they're ridiculous and the actors can improvise a lot, and they don't have to be really realistic characters that hit a very specific tone as in a feature film. They're really fun, I want to make more of them definitely.