sounds like a neat idea where some suit though this up, and people high fived (or w/e they do in japan), while developers/designers groaned.
Off the top of my head, pretty much every vita game needs to be patched somewhat to support this unless you want a shit user experience of people confused why this function doesn't work, or why I can't access say, the tv overlay on p4g.
I'm sure sony devs would probably be obliged to do this, but 3rd party? idk.
It's like the whole, gimmicks for all launch games aspect, is biting this product in the ass atm.
Heck, most 3d games utilize the touch screen in some way, from a grenade button, to item management, to item switch.
Another thing... why launch in japan? This feels like a product made just for the west. Everyone in japan are all into handhelds, and from what is known, this product does jack shit if you own a vita. I guess you probably can pop out your vita cart and memory stick and stick it in this thing EVERYTIME you wanna do something... idk.
This is a cool product on paper, but the more one thinks about it... idk. At least it should be able to play psp games nicely... but god bless your eyes.