How about adapting current remotes to use double click or hold on the "Home" button?
Which is better, get a TV with Google TV (Sony, TCL, etc.) or a smart TV (LG or Samsung) then get a chromecast with Google TV?
Is there any difference between the Google TV on a chromecast and TV version?
How about you just release the feature at all?
Why not just make the UI simple to switch? Do we need a button for everything? I don't feel like people want to switch profiles so often they need a button on the remote.