Don't see FFXV on NX. Most Japanese games aren't pushing the consoles like that with proprietary and unweildly engines to boot. I think we're at the point where the assumption is NX is weaker than XBOne but with certain hardware strengths and a lesser resolution to display at. UE4 games, cross gen games, lower budget games, and games that are built around NX are the games it is likely to run. Moreover, FFXV will be pretty old by the time an NX port would come, unless they are already working on it in secret
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If FFXV doesn't move enough in Japan on PS4, perhaps that would entice Square to jump through the hoops to get it on a portable. I don't think NX will be completely out of the FFXV ball park, but it's definitely a more awkward fit than other games thanks to the peculiarities of FFXV.
FFVII R though...I'm dubious about it but buying it for a Nintendo console on a cartridge might just be too much irony to not buy it as I always point out
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