Using a gamecube controller as a classic controller

[thaddpole]

I just got my gamecube to wii u adpater and pluged it in updated my dolphin to the most recent edition and when I go to play a wii game that I had installed (xenoblade chronoicles in this case) I found out that I could only use classic controllers for that game. I found that a bit silly but I was like well self lets see if I can make the gamecube controller count as a class controller. Sadly I think the current answer is no I was wondering if anybody else knows if its possible to do and if not should I ask the devs to do so and where would that be. I litterally made this account to post this question.

Tldr I have gamecube controller why can I set it up to be used as a classic controller, and if I can't can I ask the devs to implement such a system? last part where do I go to ask the devs about this ?

thank you and have a nice day