Actually, I think it is still somewhat relevant as a metaphor through which to discuss the issue at hand.
Is the nevernever mirror of a mortal world location shaped by the intent of the place, its reality, people's perceptions of it, or some combination thereof (and if so, what combination)?

the number of excess shifts you have is the number of shifts you can move.

Blocks are not armour and movement is not an attack.

See above re: 'attacks are a special case'

This is not a subject well discussed in the fiction (I don't recall much, if any, exposure to practitioner-half-kind), but it is implied that, where Changelings are concerned, the Faerie Courts have jurisdiction.

For those subject to the predation within those walls (as well as at least a significant subset of those engaging in the predation), I suspect their symbolism is rather tied to that predation.

If a Changeling who is also a Practitioner Chooses to be Human, then there is no longer any doubt as to jurisdiction, and the Wardens may feel quite free to chop away.

A Changeling, by definition, has not Chosen to be Human.  They have, at most, chosen to remain a half-kind.


Note the capitalization, there.  It's important.

I try to colour Fallout based on the spell that has failed, beyond merely the element that spell used.
Harry's Fuego is likely to fail, then, by simply being much wider and less concentrated than intended, in a way that causes problems.
His utilitarian wind spells would fail similarly, perhaps pulling an umbrella or two, or maybe a sword-cane, to his hand along with his staff (though these spells might actually be better represented as 'minor effects' or whatever they're called).
If he tries to pull that lightning-channeling feat from Storm Front and gets fallout, I'd be likely to have the lightning branch and fan out significantly around his target.
etc.

That being said, if you do intend to use AFSA then dropping the social bonus is a good idea.

Particularly since the social bonus is arguably worth more than 2 stunts unto itself (social attacks, and thus social defenses, typically being the most readily varied, and difficult to encapsulate within a single trapping, it is likely that the blanket language of the power-as-is would require the wholesale moving of multiple trappings)