How about pressing AL+AR+Start to access all settings? Then you could press the D-pad direction 1, 2 or 3 times to make selections?
So in other words:-
Press AL+AR+Start to enter 'Settings mode'
Then press D-Pad left to enter 'Button remap mode' or right to enter 'Advance config mode'
Then press a D-pad direction again to make a selection
Press AL+AR+Start (or just Start) to exit 'Settings mode'
So AL+AR+Start is like the adaptors 'Menu' button, and the D-pad allows you to select sub-menus until you reach the option you want. the great thing about this is its 'future proof' as you can keep adding as many sub-menus/options as you want.
...Just an idea :shrug: