I'd probably do the same if my PS2 was a slim model, but I have the fat, and used an older hard drive for it.
I'd love it if modern consoles like the Xbox One and PS4 supported any sort of network share hosting for games. They do support USB drives and I thought about using Linux Gadget USB to emulate a USB drive and store the backing file on the network share. Previously that wouldn't have really worked with the Raspberry Pis as the full sized models did not support USB OTG. It does look like the new Pi4 supports USB OTG over the USB-C power port.
I'd love it if modern consoles like the Xbox One and PS4 supported any sort of network share hosting for games. They do support USB drives and I thought about using Linux Gadget USB to emulate a USB drive and store the backing file on the network share. Previously that wouldn't have really worked with the Raspberry Pis as the full sized models did not support USB OTG. It does look like the new Pi4 supports USB OTG over the USB-C power port.