Previously had excellent and much needed help in the woodworking forum, now asking for help on the control panel. Sorry!
Trying to get a basic idea of how large my control panel will be and how it will be laid out. Looked through others' pictures and this is closest to my thoughts...

2 questions though..(1) when you choose an input method for a specific rom does it 'lock out' all the other controls? On this panel, when using the 4 way stick you'd be brushing against the trackball, or using the spinner accidentally pressing the player 2 buttons. Would that mess things up? and (2) am i right in thinking 4 way stick games are all old(er)...so 2 fire buttons max would do for that stick, and it could have its own dedicated buttons rather than positioning it to 'share' the 6 player 1 buttons...
Thanks in advance for any help with the above...