I love my shield, it’s been a staple. If they wanted to really knock it out the park, the next step would be a steamos port with DRM support.
Unless Valve are going to do some work to enable that and support a hardware backed chain of trust for drivers that's not going to happen. (I think it should happen but that's not the same as that it will.)
I just want a more open OS.
I don't mind if it requires running a vendor signed boot, kernel and driver chain, I'd be using those same vendor chains anyway for non upstreamed hardware most likely.