Since the Wii has become such a success off of titles like Wii Fit and Wii Sports, I'm certain they will continue more in that direction.
That's not actually what they're doing. They're being rather lazy, yes, but they're waiting for all the newly generated 'casual' gamers to want to move on to more 'hardcore' games. They did it with the DS, where they started with Nintendogs and Brain Age and shit (and every other developer thought it was just another Virtual Boy or whatever), and moved up into 'actual games', and now they rode that wave they're doing it again with the Wii. Notice that they didn't make Nintendogs 2 or Wii Sports 2. They'll probably start making your kind of games again once the 'casual' gamers have caught up.
When the whole casual games fad dies and all the imitating developers go bankrupt, they'll probably make another console or handheld or VR hamsterball or whatever and start all over again. Nintendo's calling it a 'strategy of disruption', but nobody's listening and thinks the Nintendo strategy is just to make sickeningly-sweet retard-friendly games, and then third-party developers complain how every gamer's a Nintendo fanboy when nobody buys their crappy peggle knock-offs.
The reason the whole thing is going so slow for the Wii is probably because for it to work for Nintendo, it has to make quality games if it wants to snare the new gamers along into the hardcore, and to get back to whatever the topic was, this is why you'll have to wait a bit for your hardcore franchises.