The point is Jay keeps Nas in our thoughts and minds as he promotes this "new rule" angle. Nas probably didn't need to be on the album but in Jay fashion he finds a way to position Nas as we move into the next phase of this music shyt.
I mean he could've easily hit Scarface for a feature
Sorry bruh but this is quite possibly one of the most ignorant posts on Nas/Jay-Z I've ever read..
Jay keeps Nas in our thoughts and Minds?

Nas positions HIMSELF into the next phase of Hip Hop, he (along with Jay) is a leader who continually blazes a path that was thought impossible, that of rappers entering their middle years maintaining both cultural and commercial relevance.
This is Nas in 2013

Jay ain't got shyt to do with that