All Eyes on Me

I think larps are a bit exceptional as a storytelling form, as when they're done well, ALL PCs are a protagonist of their own story. I think one needs to use a slightly different metric when gauging there. If you have too many WSM protagonists, that is likely to affect how many of the other protagonists end up. But in that case, it's probably a matter of proportion, when in other media it's hard to have more than a handful of important protagonists.