Nintendo doesn't need third parties anymore. They will be one of the biggest smart device game providers in a year or two, if not no.1 hands down. They also don't have to worry about casuals or kids anymore, their games being on iOS/Android cover that.
They can do whatever they want with NX. It probably being a fusion platform means they don't even need third parties to have a steady release flow of games anymore.
They won't have to do things like make two different versions of Smash Brothers for each device, they'll be able to easily scale up/down a game like that and put it on all their NX devices.
Screw GTA. They don't need it. My guess is they will be even less communicative with third parties now, especially Western ones. It's just never been a good fit between the two, now they can do as they please.
I actually think too if their movie licensing/TV licensing works out well, they're going to make a ton of money off of it. They're going to become sort of like LEGO, a brand that's become much bigger than just toy blocks, in the same way Nintendo is going to become bigger than just video games.
Now that they're not walled in only to their own shrinking propietary hardware they can reach far more kids with things like smartphone games and animated movies.
