Feature request: dumping all textures at once

The newest release of the canary build lets us use costum texture pack and dump a games textures while playing it.
This feature is absolutely amazing, but you need to play trough the entire game to get all of the textures (and even then you may be missing some).

It would be a nice feature if there was a way to just let citra dump all of the textures at once instead of while playing trough the game.