You're right, Sanctaphrax, PCs don't die very often; it's the permanent loss of a character that's beloved.
And you're right Hick Jr, I was confused to think that a PC would take Extreme Consequences AND make a Concession. What was I thinking?! Both of those are ways to cheat death is my point, using the tools of narrative. Knowing that you'll come back from death means you can choose not to take an Extreme Consequence and you can choose not to concede.
My "Phoenix Power" or whatever it is, was written to avoid using either of those narrative tools. I cite the Malakim from the game In Nomine: warrior angels designed to fight and die rather than be captured or forced to surrender. They might fight and die, but they come back (like The Crow) with a vengeance.
I -like- the idea of a character who will choose to die in combat, knowing that he is not shackled to this mortal coil, without having to make concessions or accepting an extreme consequence. I'm not writing this Power with a GM in mind who's trying to kill the PCs left and right. I write this with a GM in mind who wants to allow her player to play a former angel immortal who, well ... just can't truly die, no matter how many times he's tried. (He also seems to die a lot, to a comical degree.)
Oh, and thank you, Sanctaphrax for the P.S. (totally, you're right.) Sadly, your link doesn't work for me.