As I was telling someone in another thread, if you have an ergonomic Street Fighter layout like this
23
156
4
Then you can make the seventh button a pinky and still have something close to a Neo Geo layout, like this
237
156
4
Then you can wire button 7 to the same terminal as button 4 and you don't have to do any software configuration. This does mean you have to use an ergonomic six button layout, which I personally decided against in my actual arcade panel because my home built control box was not comfortable with that layout, ironically enough.