The Wii is the console definition of "casual gamer". Families buy the Wii for the gimmick factor, and cheap price, use it for a bit and then barely touch it after they e had their fill. I know atleast 10 people who's families have done just that. Now if this new system's goal is to get those casual gamers to purchase it, then Nintendo starts releasing more 3rd party franchises and in house franchises to get them playing longer and turning them into "consistent game sales" gamers, then cool. If it's another Wii, aka sell a [censored] load of consoles with a flashy gimmick to a target audience of casual-semi casual gamers, then no, keep skyrim away. The last thing TES needs is to market itself to the casualest of the casual gamers market.
I've read that Montanan isn't even calling this new system it's "next gen" system. Its more like a bridge to their next gen system, or something or other. Weird.
The Wii owns in units sold, but only because it's so well marketed as a family game night type of machine. That, with a low price, made it sell like hot cakes. When my born again aunt told me she had bought one I looked up in the sky, and didn't see any pigs flying. That's when I new nintendo had sold thier soul to the devil.
It's true Wii has a huge excess of casual games, but they cater to more hardcoe fans as well.
Titles such as Super Mario Galaxy, Super Mario Galaxy 2, Legend of Zelda: Twilight Princess, Donkey Kong Country: Jungle Returns, New Super Mario Bros Wii, Metroid Prime 3: Corruption, Kriby: Epic Yarn, Mario Kart Wii, Super Smash Brothers: Brawl, Wario Ware: Smooth Moves (Maybe that one), Monster Hunter 3 Legend of Zelda: Skyward Sword, and the new Kirby Game coming out are all examples of games that appeal to more hardcoe videogamers that have had Nintendo Consoles since the beginning.
Just because they don't have the latest and greatest realistic shooters and/or racing games doesn't mean it is just "casual games." I personally own an Xbox 360, Wii, and a gaming computer (which I plan to get Skyrim for) so that I can enjoy most games out there.
Edit: Some games (like Mario Kart Wii and Kirby Epic Yarn) can appeal to casual gamers. However, they also use franchises that hardcoe fans from the beginning want to play.