I didn't think this was possible but when the MicroSD card fit through one of the openings, my mind raced to find a way to make an externally accessible MicroSD mount, so this is what I came up with. It's a combination of a TPU bezel print and PETG backend brace and support for the extension PCB. The results...see the pictures. It works and I can add/remove games without opening the case now. So happy to make this happen. I'll update the post later with a link to the files and directions. Gonna need a specific kind of extension as well; I "think" those are very common, but could be a lottery as well. For now, enjoy the pictures.