It mentions that the work from Valve was for accessory support. So they may not be extending that much effort towards getting it on specific devices. Rather, I think they're working on generic PC support on the side.
Agreed. I always loved the idea of the HTC Mini +.
Put the sim in your laptop, that's the connectivity hub.
The mini phone piggybacks the LTE connection so you don't have to pull out your laptop for simple calls, texts, navigation or music actions.
Oh it melts Androids as well. It's just full of tacked on garbage that wasn't in the original.