Evenin' everyone. Hoping this is still open.

I have but a few questions to add on top of what @Ariamis asked above:
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[*] While the life expectancy is low for Puellae due to witch conversion, do they age or are they, in fact, immortal?
[*] Though stratified and cut-throat by nature, do any of the Magical Girls from history have what is considered a "hero" status amongst others? That being, they were champions of the revolution, or perhaps even pariahs that fought on the side of normal humans. Basically, are there famous magical girls whose names have left their mark in history, post-humous or not?
[*] Just how exclusive is exclusive for the likes of Serenity. Adding on to something clarified earlier, would certain "radical" elements of the Shadow Compact begrudgingly work with Serenity?
[*] Is Walpurgisnacht an issue in this "modernized" Magical society? I figure there are armies (so to speak) of Magical Girls that could be dispatched to combat Walpurgis should she arrive.
[/list]

Eagerly awaiting your answers, I'm quite interested in reviving an old character of mine for this.  

In other news, isn't this actually a near-perfect society in terms of Incubator ideals? Fear begets despair, and hatred along with fear both create strong, if not relatively futile and spur-of-the-moment wishes. Earth was already an "emotional energy generator" for the Incubators, such a world is practically a factory for them.