Also, I just remembered - cartridges, CDs, or no physical media at all? What does the perfect Nintendo system have?
I still cling to physical media though I realize I am in the minority. I heard that with Switch, about half of software sales are still physical so I assume we will have physical media for the next console at least. In terms of the format, whatever will last the longest
The whole scare of 3DS carts going bad after a long period of not being used was worrying. Of course discs also have their deficiencies.
One other thing I thought of is the wired ethernet port. This is probably my favorite upgrade on the OLED switch model so I am really hoping the launch version of the next console has this.