My perception is that many of the questions that come up in DFRPG (or FATE in general) can be possibly solved by approaching Aspects as having different values.
I'm also thinking about the FATE Fractal, and how a game can zoom in or out, and apply Aspects/Skills/etc. to micro-systems (a Poison being given its own FATE character stats to represent how it hurts a victim and how easy it is to be defeated) or macro-systems (a Country or Organization being run as a FATE character against other, similar-scale entities).
I am imagining a Maneuver/Declaration/etc. resulting in an Aspect which has not only a Meaning/Identity but also a Quality rating. At the moment, the "Quality" of an Aspect is inherent in what you ask for. At the moment, the Quality of an Aspect is inherent in how it is named: the Aspect itself implies the Quality, and the GM determines the target Quality on the fly and lets the player know how hard it is to establish that Aspect. Tell a GM you want to create the Aspect "Building on Fire" and you'll get a particular difficulty rating. Tell a GM you want to establish the Aspect "Entire Mercenary Emplacement Ablaze" and you'll get a higher difficulty rating.
But what if we gave Aspects an *explicit* Quality rating, which not only made it clear how difficult it was to undo or fight, but could also be broken down and "spent" on various applications. Instead of just the Aspect "Fire" - which has its own implied effects and scope - we could establish A Mediocre Fire, a Legendary Fire, or a Superb Fire.
And then we could break down that Quality and spend it on various things. A Fire or Poison could attack and defend based on its Quality. You could spend some of that Quality to "buy" other "powers" or Aspects.
So maybe you get 12 shifts on the Maneuver to create the Aspect "Neighborhood Ablaze". You could trade that for a simple 12 Quality Fire, or you could say you made a 6 Strength, 6 Speed Fire.
Get 8 shifts on your attempt to make a Poison, and you could get a 6 Quality, 2 Sneaky Poison, or a 3 Quality, 5 Sneaky Poison.