Thanks for the feedback!
For a long time, I've been considering the idea of a removable face plate (like NFC Skyreach 4 Mini). If I did, there would likely be some evidence of the attachment points showing on the front (eg. circles at each corner). I'm also not sure I can get away with only four fasteners holding it in place.
Even if I could create a blind hole on the backside of the face plate to install a fastener, there couldn't be any holes/vents around the fasteners. So you would still end up with padding (ie. no vent cutouts) at the top and bottom of the face plate: