I know a one-shot is better than a serial nine times out of ten, or more, but the logistics are tricky. I'm thinking (idly) of setting up a few (around 3-4) groups of GMs to alternate running one-shots on a vaguely monthly basis, 3 per year per GM team. The problem with this is that our local player base is divided between older LARPers that don't have time to waste on LARPs that they're not sure they'll enjoy and younger LARPers that don't have resources for a lot of costuming, prop-ery, and entry fees. Running semi-regular one-shot LARPs would have to be lower-budget than a single, high-profile LARP, but still higher prodo value than a chronicle.
A difficult question, it is. Meditate on this, I will.