Display mods? You mean changing resolution, graphics/text ratio, etc?
One I can think of: allow display of graphics/text/video from currently active AUX bank..
have a softswitch: CXXX
CXXX = 0, operates in original manner
CXXX = 1, video from currently active bank
CXXX = (0000000)1, display video from bank (0000000)
