The layout i like for the switch blocks and joysticks looks bigger than i expected but it's right in range with my original estimate. She's gonna be a chonker and if i skip the CCTV camera she could be thin and blocky, all like Dean Stockwell's little friend.

The display will be on face panel #1 and the keyboard on panel #3. I'll probably want to taper the bottom in so users can put two thumbs on the keyboard...

so maybe:
[DISPLAYDISPLAY
DISPLAYDISPLAY]
[UD]  SEL  [AB]
[LR] START [XY]
   \  KEY  /
    \BOARD/

or maybe offset like:
[DISPLAYDISPLAY
DISPLAYDISPLAY]
[UD]  SEL  [AB]
[LR] START [XY]
        [KEY  ]
        [BOARD]

[PICTURED BELOW: The future of gaming?]

(see also https://accordingtoziggy.com/)