Some of the Game Cube knock-off hardware is incredible. They make the game console smaller, prettier, more see-through-ish, higher quality and cheaper. I know that piracy is the issue here, but it's interesting to see what other designers can do to improve the console.
Exactly why would a Gamecube knock-off console be illegal or "piracy", provided:

- It was not referred to using any of Nintendo's trademarks

- Nintendo does not have patents covering the Gamecube

- They are not using Nintendo's BIOS except as permitted by the doctrine of minimum interoperability