It could easily support both, I'd think. No good reason not to. If you have a story to write, write it. If you have a character to play, find others who will do the same. Don't apply significant delta to the characters of others without permission and don't make any characters who are too cool for school.
Easy answer is stories (or RP-turned-story) for the bits where you're off by yourself, and RP (which may then get massaged into story) for things like Conventions that have lts and lots of everyone.
Easy answer is stories (or RP-turned-story) for the bits where you're off by yourself, and RP (which may then get massaged into story) for things like Conventions that have lts and lots of everyone.