Found my wife's old 2001 "Nintendo Gamecube" and then it sparked an idea. Once I was done it looked very nice but I still feel there is something missing! How can I make round controller ports?
Perhaps something like this using 1x4 arches could work?
This does work out to being 2 modules too wide for 1:1 scale with a GameCube, but the trade-off in accuracy may be worth it to you to get the round ports. It appears to be only 1 module wider than your current design.
Here's more detail of the build steps: