To have a proper comic-book feel, it seems to me like villians should generally be able to spend most of their villian points near the beginning (it's traditional for the heroes to lose early battles), while heroes should be more free to spend hero points near the end.
This has come up as an issue in our games, with PCs being unwilling to go down in some early fight, using up all their hero points, and being useless later.
Anyway, as a solution, I was pondering a delayed hero points mechanic; you start out with some relatively small number of hero points, and gradually get the rest over the course of the adventure. This might fit with a hero point recovery mechanic as well.
Problem I've had is coming up with a good way of implementing this. Has anyone else tried something similar, and any comments on what did and didn't work?