Though uncreative, I kinda like the name though :D I've played around with Starling and really wish I could use Flashpunk style with Stage3D. Thanks for this!
A good (and fairly easy) alternative is to just simply hack the Graphic objects in FlashPunk to use Bitmaps on a display list instead and use GPU rendering mode. This allows you to switch to a mobile-friendly setup really easily without having to change your game code at all too.
I did it for one of my student's projects, only took me about an hour to switch 'em over (then again, I'm intimately familiar with the library).
This is a cool initiative though.
Would it be possible for you to share that part of the code on github or on FlashPunk forum? Maybe someone can take it further and setup something that you can choose what kind of display system you want to use when you initialize FlashPunk.
Also, Bitmap on DisplayList and GPU rendering mode is not the same as Stage3D, right? It's been a while so I'm not sure if I got this correctly.