is not expensive if u think that u get a phone and a table i buy mine and belive me is fantastic!
It is expensive if you think you could get a Galaxy Nexus + TouchPad for half the price with TONS more development. There are many phone + tablet combinations that have actual development that will not cost near that much.
I think there are some evidences, take a look:
root: http://www.modaco.com/topic/360416-superboot-padfone-2-root-solution/
cwm: http://www.modaco.com/topic/360432-r1-customised-recovery-image-for-the-asus-padfone-2/
deodexed rom: http://www.modaco.com/topic/360444-deodexed-wwe-rom-for-the-padfone-2/
"custom rom": http://www.modaco.com/topic/360458-pre-mcr-wwe-rom-for-the-padfone-2/
Finally the guy who is making this come true is a XDA member since 2003, his nick is PaulOBrien
do you need some more?
Root, CWM, deodexed stock and "custom" (which is basically just another deodexed stock from what I see) are not DEVELOPMENT.
Is there even one custom kernel, actual custom ROM, even a broken CM10 or AOKP port?
What would actually happen with a sub-forum is there would be a few Q&A troubleshooting threads and that's it.