My Mayflash GCN adapter came in the mail today!

[Evil Yoshi Toes]

I have one and I like it. The only issue I have with it is that the plugs come out of the ports really easily, so I have to be very delicate with it. I got mine when Smash for Wii U came out though, so maybe that has been fixed with newer models. I use mine now to play emulated GC games and to play smash on switch and it works very well.