How will future Super Mario Maker games be on future consoles? without 2nd screen?

[Soundwave]

FromDK said:

Soundwave said:
It could come with a cheap USB accessorie that plugs into the dock that lets the video signal be mirrored to the TV if you're using it from the couch and want to use the touch screen. Like a stripped down Google Chromecast kit, just with the video mirroring and nothing else.

Why would you need "a cheap USB accessorie" ? (its hopefully a part of Switch)

And I also thinks Switch can do this.. specally with less demanding games like Mario Maker

There would have to be some kind of receiver build into the dock to do this, which I guess Nintendo could do, but I think they want the dock to be as dirt cheap as possible.