They already did that kind of thing, but it seems to have died off. My TV has an MHL port, and I've got an MHL roku plugged into it. One remote controls both

They already did that kind of thing, but it seems to have died off. My TV has an MHL port, and I've got an MHL roku plugged into it. One remote controls both the TV and the roku. Specific buttons get passed through to the roku. It's actually really nice.