Will it be relevant to the NX launch?Yes.Will it sell well on NX?Most likely yes.Will it bring new players to a Nintendo console?Thats the question that cant be answered.It will certainly bring some people in, the same way i bet that twillight princess on Wii did, but will it be a significant number?That I dont think anyone can know.
In the end I personally think it will help, but not enough to make the console succesful.The NX needs two things in my opinion:an excellent hardware, and superb new game, in the sense that it either use known franchises but that revolutionises the genre or the industry itself, or a brand new IP, that gets everyone excited, like Splatoon did.
My (locked) thread about how difficulty should be a decision for the developers, not the gamers.
https://gamrconnect.vgchartz.com/thread.php?id=241866&page=1