I wouldn't. If NES games happened to be cheaper on the 3DS then I'll just download games on there. If they're cheaper on Wii VC then I'll continue downloading games on the Wii.
Also, there's no point in paying for a game I've already downloaded on the Wii unless the save state feature is particularly appealing when it gets added. Some NES games I find too frustrating but with the save state I'll be able to get further than I did before.


