If JRPGs want to go back to consoles, they'll have to actually do well there.  But I'd say 
Persona 5 and 
Xenoblade Chronicles X are going to be the ones the actually decide the fate of the JRPG on the console market.  Not Square.
			
		
 
	 
 But they aren't going to be mass marketed, so they won't decide the fate.  I can't see either of those games getting the marketing required to "decide the fate of the JRPG on the console market" - right now the fate is already decided - it's a niche thing (and niche will always be around, you don't truly kill off a genre, it just becomes niche).  You need an FFVII level of impact to step back out of the niche area.  I don't think Persona 5 and Xenoblade Chronicles are a the point that they will be talked about by everyone in the world, because these kind of games simply appear in the background and few new people pick them up when they are released.
I mean, I hope I'm wrong, but I'm a JRPG fan and I haven't touched either the Persona series or the Xeno series.  There was one of them that I was quite interested in but they didn't even release it in the UK.