Gonna have to disagree on the “It’s a handheld first” part since I think Nintendo went out of their way to make it an actual hybrid. Where you can see they achieved that is how people use it differently. Personally I barely use it as a handheld and some games just need the big screen. But others play it both ways and some even mostly handheld. That’s the genius of the Switch… Well part of it. But the price was lower specs, yeah.
Anyway, since they can’t compete with the two (actually 3 since PC gaming is ever growing) power beasts the Switch is a perfect place for unique games. They already have plenty but if 3rd parties are smart, and some like Capcom seem to be, more exclusive games should be heading it’s way with the occasional port. Astral Chain and Octopath both sold over a million copies each. Nintendo make great games, but they can’t push out enough of them alone, so third parties should look at them sales now! It’s time
Nintendo should, inmy opinion, work with third parties for the Pro. That way, not only MP4 and BOTW2 will make good use of them but some 3rd party games can be a part of it’s launch. And it would still be in the Switch family and keep selling for some years until it’s successor.
It’s about providing new gameplay experiences for all Switch owners.
This could also mean add-ons, which can be a tricky thing. The PSVR worked for Sony, but the Kinekt for MS…Not so much. But hey! It’s Nintendo. They like to surprise us.