When you're dealing with arcade buttons, it's not ideal. For instance, the auto-mapping puts my 8 button layout as:
L,?, Z, R
X, A, Y, B
I have it set this way in recalbox:
L1, L2, R2, R1
A, B, X, Y
That bottom row really throws you off when using gamecube. Being able to change the mapping would easily solve this issue. Thank you.