I would love it if someone (let's be honest, nintendo) would bring back large physical cartridges for games. It's such a pleasure to put a large piece of physical media into a console to start playing, an opportunity for artistic expression, etc. With todays hardware you could make the games boot up instantly.

The "thingness" of older hardware had a pleasure all its own.

Also, you owned it.

EDIT: I tapped into this nostalgia in a way when I released htmx 2.0 on 5.25 & 3.5 floppy disks for the first week: https://swag.htmx.org/products/floppy