I mean, MonHun already exists on multiple ecosystems between mobile, 3DS, WiiU, PC, and soon to be PS4 with MHFO2 (unless that project/discussion from last year totally evaporated, but I don't see why it would have). So it already exists multi-ecosystem with products targeting the strengths of the ecosystem they appear on.
Right now, as I look at it, MH # or MH (letter) have their strengths in being mobile-friendly, designed conceptually in bite-size hunts that fit perfectly for stop-go mobile play, and the market likes the product in such a way. We've seen no explosion of hunting games taking off on console platforms (and we've in fact seen products diverge from MH formula in an attempt to appeal more broadly to the western strengths of the consoles, like with Toukiden), historically this has also not happened on much more successful platforms both in Japan and worldwide. Seemingly Capcom didn't even see interest in porting MH4U to the WiiU despite what would have likely been minor work and its predecessor doing respectable (albeit relative to the handheld, low) numbers.
I wouldn't be even remotely surprised if we started seeing MH #/Letter/Greek Symbol appear in some capacity on mobile. (By the time the next MH mainline is set to launch, also, I'd imagine the Vita will be even more moribund and, in the west, probably gone the way of house phones.) But I honestly don't see a logic in putting it on any console, even the NX home console outside of some "by default" nature of existence. The product (as in home consoles) isn't of a type that the fanbase seems to want, the product isn't on a platform that the market generally seems to want.
To top it off, I would imagine Nintendo as a business would not want to let go of the product line they have a hold of to themselves (and are seemingly doing all in their power to proliferate the brand as a quantity amongst their extended fanbase with crossovers). Money is a war they can fight and biding can come from all sides, but when it comes to having a product conducive to the market (and the potential to actually act like a market leader) to synergize with the franchise... they're pretty much the only ones who have a shot at even making that argument. Even the ever lofted "western strength" argument of the PS4/X1 would be rather folly in this scenario as the west has in general (on more successful consoles) not been a strong front for the franchise or genre and its not like the 3DS (and potentially NX) would suddenly lose its tens of millions of western populace. That handheld market in the west also responded well to MH4U.
Hopefully I've been coherent!