Has anybody in the history of ever wanted to play mario kart in any kind of competitive or even just for fun with a wheel?
I can sort of see some of the really nice wheels and wrap around monitors doing for a simulation game.
Anyway wireless controls were hard around the time those things were released (even by the DS* things were still all about custom RF rather than bluetooth. To the person thinking about bringing up IR then think long and hard before you do that one.) and wired controls into that sort of thing is a dubious prospect (all those damaged controls/ports/consoles...).
*which we might also want to remember did not have full wifi until a firmware update to enable it. That might have been patents/licensing concerns, and some of the same might be said for bluetooth.
The general lack of TV out is pretty shameful though, even as a secondary device.