Automatic Ability Advancement

[Senkusha]

So, I saw this in one of the many Facebook Groups I frequent, and thought this might be an interesting, refreshing way to play a game.  I immediately thought of Big Eyes Small Mouth, because the Attributes system is fairly open and flexible, accomplishing this type of mechanic would be fairly easy.  But I don't see why this approach couldn't be used with other game systems.  What do you think?