[X-Maniac]

I don't think the Mystique/Azazel/Nightcrawler thing will ever be stated explicitly at all.

It's not Bryan's style to be so 'obvious'.

He tends to leave it at hints and subtext, like whether Sabretooth remembered Wolverine in X1 and whether Deathstryke remembered Wolverine in X2.

I'd be very surprised if the birth of Nightcrawler became a plot point.

As fans, these things are what we want, but in the 2-hour space of a film, there just isn't time for it. If it doesn't relate directly to the main plot, it would probably be left out.