I think it would be possible for the mobile-use patches (host mode + charging) to make it into CM. However, I do not think CM will be interested in the fixed installation functionality. I thought about this a lot and I assume the dash board install use case (or similar stuff) is maybe a little too special purpose for what CM is trying to achieve.
The patches would only affect the N7 kernel and would have no consequences for other devices.
Sorry, I should have been more specific. There was talk about having a new option in Settings that would allow audio hot-plug support. Wouldn't that have to be across all devices for it to be allowed in CM? I guess what I'm getting at, is if these options and kernel were available in CM, it'd be perfect for a "mobile" installation.