I am a huge fan of the Nintendo ds Gameboy Wii and the Nintendo switch and the Nintendo ds and Wii is now sadly discontinued so I think it will be great if Nintendo bring every ds Wii and Gameboy games to the Nintendo switch e shop. I think it will work because the screen is big enough for both screens to fit. Finally there are people who has just gotten into Nintendo franchises like Pokémon and super Mario so it will give them the opportunity to play the old classic games also it will be simple to play Wii games in handheld mode and dock mode such as Wii sports and Wii party. thank you and please sign to make this happen. 

how will it work?

If there's a game that has a ds version and a Wii version I think there should be 2 versions of the game the ds version and the Wii version. If you play the ds version you can only play the game in handheld mode, but if you play the Wii version you can play the game in handheld mode and dock mode.

Thank you