I think this is a wonderful fan service to Smash Bros. fans and it reminds me of the NES/SNES era where you could choose your controllers, and third parties offered all sorts of different options.

I hope that Nintendo continues to offer controller options in the 9th generation.

I like more options too, but I am very suspicious of this. Will connecting Gamecube controllers to your Wii U boost sales of the console? Doubtful. What is the real reason for this thing?