I'm thinking similarly. But you don't need GameCube controllers to use a wii. I think that's all the dock adds.
GC Nano: https://bitbuilt.net/forums/index.php?threads/gc-nano-the-wo...
Short Stack: https://bitbuilt.net/forums/index.php?threads/short-stack-th...
As someone who is absolutely not part of that scene, I obviously don't get a say in that.
Both are super exciting though. Maybe a few years down the line, we get some 2" LCDs integrated or something for truly portable play.