A category starting at reseting your game and ends at finishing the epilogue. Commentary world is allowed as well as any fast traveling. The point is to use any method to beat the game.

we kind of already have this, the Commentary Enabled category in the miscellaneous tab is less than a minute long but uses speedrun mode. its going to be patched but previous versions of the game should be obtainable if people really wanted to keep running it, which i think is preferable due to how much less complicated timing with IGT is