I would have said FF VII remake, but after I saw how combat looks like, it was clear it's nothing for me anymore. I would have said Cuphead, but that one got released on Switch, too.
As a result, nothing comes to mind, really. Everything else I like comes out on Switch and/or PC. This might change when the next gen is announced, but right now, nothing comes to mind.
The Nintendo eShop rating Thread: http://gamrconnect.vgchartz.com/thread.php?id=237454
The Steam/GOG key gifting thread: https://gamrconnect.vgchartz.com/thread/242024/the-steamgog-key-gifting-thread/1/