I need to chime in with Supplanter's angle here: the combination of scene distinction + personal distinction used at opposite ends of the die spectrum on each roll actually dilutes their value while similarly diluting the value of plot points (which, previously, had to be taken by sacrificing a higher die for a lower die).
Personally, I would rather see, as has been mentioned, scene distinctions turned into something more like a narratively appropriate asset/complication. Darkness, as that has been thrown out as an example, is a complication for Joe Thug; he can't see, has no uber-sense, and stubs his toe on the table. Spider-Devil, however, has Radar-Spider Super Sense and makes a solid claim to be able to navigate (it tingles when my toe gets near that table!) in the dark room. Heck, he might even be able to leverage that Darkness die code (whatever it might be) into a positive, adding its value due to his stealthiness.
I think this would make them more valuable in game play, would make their presence far more noticable, and would also allow for greater variance in value (they could range from d4 to d12). You could still include the opportunity to earn a PP, too, if the option to make the scene trait a complication earned you a PP.