This sounds potentially cool.
As a note, the next AP that Paizo is coming out with is all about the worldwound, and they're coming out with the "Mythic" rules to support that. (This is not really epic level play, but something that adds power to characters and monsters sort of to the side of the regular level progression.) You don't want to wait for this for your game, as it will be a few months before Mythic comes out, and five months before the next AP starts (the Worldwound one). So, I'm not actually being useful here. But it is fun to note that you're thinking in the same direction as the Paizo developers right now.
As a note, the next AP that Paizo is coming out with is all about the worldwound, and they're coming out with the "Mythic" rules to support that. (This is not really epic level play, but something that adds power to characters and monsters sort of to the side of the regular level progression.) You don't want to wait for this for your game, as it will be a few months before Mythic comes out, and five months before the next AP starts (the Worldwound one). So, I'm not actually being useful here. But it is fun to note that you're thinking in the same direction as the Paizo developers right now.