That controller would be my top pick if it only had a bigger D-PadObviously the GameCube controller could be better if you could click the analog stick as buttons and if the cstick was....well...I don't want to talk about the cstick
Still the GameCube controller is one of the most comfortable controllers I ever held (PS4 is good too though, don't get me wrong)
Edit: Can't forget about ZL. Seriously, Why does the GC controller not have a ZL button?
Edit2: This controller. Need I say more?