A few things we'd have to consider for the Nintendo move:
1. While direct ports are out of the question for the Nintendo-DeNA partnership, games in alignment with the Touch Generation style found on the DS may make the cut. Stuff like the Brain Training series or Nintendogs.
Minigame collections may also take the jump. Remember that Nintendo pulled off quite a lot of these on the DS (and a lot of them would make the transition fairly easily, too. They just have to be optimized for multi-touch, perhaps, but that's a small thing.
Nintendo may have already been testing to see how this model would fare with its fans with Rusty's Real Deal Baseball.
2. We may also see pay-to-win stuff much in line with what the DeNA mobile division has been putting out. To give you an idea, their mobile division is named Mobage. They also went into a partnership with Disney, and this is the route they also took with their games.
Nintendo has been testing this model out lately with Steel Diver: Sub Wars, and Pok?mon Shuffle.
3. Mobage on its own has not yet published any titles on Windows Phone, as far as I know. Well, Windows Phone may as well be consigned to a fate of <1% market share in Japan, so I think it's rather unlikely for us to see some benefit from this partnership.
I'd love to play Pok?mon Shuffle on my phone, though.