I'm going to change my mind here a bit. I'd quite like the idea of a "Super Gameboy" for the Wii U that lets you play DS and 3DS games you own on the Wii. That's fine and I would even go as far as saying it's pretty cool. Kid Icarus on a large screen? I don't care if it's at Wii resolutions I wouldn't mind giving it a go.

Having said that I don't like the idea of 3DS/DS ports or paying for emulated versions on the VC AND I'd be much more excited about what ideas they can take from 3DS/DS games than what games they can bring over as is.