pokoko on 17 October 2015
Traditionally, Nintendo has only courted Japanese developers and the biggest of the western publishers, like Activision, Ubisoft, and EA. If they're smart, that will change, and they'll open up dialogues with just about everyone that makes AAA games.
Very few western developers will spend resources on any kind of Nintendo exclusive, and if they do it will be something quick like Zombi U, but Nintendo should try and get a port of every major title that is in development and slated for a release near the launch of the NX. That should be priority A, B, and C.
