The Steam Machine is slightly bigger than a portable Blu-ray / DVD player. (I just checked this with my own players)
I can’t wait for someone to make the equivalent of the Gamecube’s GBA Player for discs. Because of its size, It could even be a plastic shell where you put an existing Hitachi/LG portable drive without having to disassemble anything
Someone could make a custom front plate with a vertical disc drive.
That would be so dope
Holy, yess! I am not sure if the faceplates are big enough for it though
Idk if it would be clear but laptops for a while had cd drives and they were pretty small.
Currently have a laptop with a disk tray, and it could hypothetically work with some design considerations.