I like my layouts to look a certain way.
I guess to be honest sometimes perhaps they are not user friendly to someone not in the know.
But for me I know what does what.
As I work on this latest project with multiple emulators I know I need a solution to indicate what is what. For now I'm soooo doing the idea of a default marquee image which will simply be a system logo. I'll use the make transparent option to maintain the look I want.
For my CP I have a 2 player 6 button layout, 3 over 3 Street Fighter style.
From left to right the buttons would be 1 thru 3, and 4 thru 6. I think that is pretty straight forward.
When I set up my emulators I looked at joystick images to see what was what , so NES was B before A (so for me B is 1, A is 2).
I set up my controls to work with my favorite games as the default. Meaning that for SNES I looked @ SFII. Low punch to High punch - so from left to right 1 - 2 - 3 (if that makes sense).
However as I did this I thought it would be cool to be able to pull up some info on the controls.
I found some great resources that have old instruction booklets and took some screen captures, put them in Photoshop and cropped them as needed. So I have some screen shots of the NES Bad Dudes manual, SNES Street Fighter II, etc. I'd like to have it where a person can pull this info up some how to review. So if a person was not in the know they would see that NES is 2 buttons, SNES 6, etc etc.
I usually create some form of instruction sticker like you see on Nintendo DK, DK JR and Popeye cabinets. A 5"x7" graphic that has info on how to navigate the menu, etc. I'll add some info to indicate how the control panel is layed out, what button is what.