i didnt read your post before it was edited but there is one thing that some people in the wii scene need to understand. Almost anything with the wii is possible but is it probable is the question. Yes making this is possible but see as when you load a game that screen you see about the disc read error is code generated by the game not the wii because after the game loads the wii nand almost completely shuts down. So to have the Wii reset every time that happens, every game you have you would have to reprogram to reset on disc read error and reburn them to another disc. All that work just to not have to get up and manually turn the wii off you tell me does that seem reasonable when that 2-4 months of research and programming could be put to better use.
You know it's possible to load games from USB drives nowadays, right? It costs a bit more than a stack of empty DVD's, but it's more convenient, reliable and allows you to be lazy to no end.
If that's too expensive, you can also buy a power outlet with an on-off button. If the cable on it is long enough, you can put it between the wall and the wii and still have that button within grasp. That way you can turn off the wii whenever the thing crashes on you without getting up.