You all know how Nintendo dipped into the casual space in the Wii and DS era. This made sense for them since they had completely lost their control of the teen market, the market that does not prefer cartoony and childish graphics and themes. Not necessarily the market that likes guns and violence either, just not childish themes.
The transition went from games like Mario64, OoT, Goldeneye, starfox to games like Wii Sports, Animal Crossing, NSMB and Mario Party.
Of course, in both eras you'll find games from the other pole, but the bulk transitioned from one pole (non-childish games) to the other (childish games).
With Nintendo finding absolute success again in the casual space in Japan, literally dominating their competition thanks to the 3DS, they are now in a position to renew their ties with the Industry. Just yesterday, Iwata was praising Capcom on their excellent game, MH4, which targets exactly the type of audience the N64 and PSX did back in the day. It also seems like their ties are growing.
What this means is that, now that Sony is out of the way in Japan, Nintendo can finally live and breathe within the industry and find its place once-again as the all-around entertainment provider of the industry. Not just for kiddy content, not just for kids and adults, but for all ages, including teens. And though Nintendo also sold games to that market for the Wii (Xenoblade, Pandora's Tower), the games were never highly marketed and didn't catch on due to Nintendo having lost ground in that market. I foresee, with Nintendo's continued domination in Japan, a growth in the enthusiasm of the industry and market for those games on Nintendo platforms, allowing Nintendo to finally shed out of that stigma it gained of being a company that makes games for kids.
This is my dream, make it happen N.