Originally Posted by DigificWriter
I believe Singer has gone on record stating that he and Vaughn introduced Aezael because of his comic connection to Mystique and Nightcrawler.
Maybe during that time, they thought about it. But now with DOFP happening, I don't think they have enough room for that and I think the series don't really need it. If they went ahead with that mother/son thing, it might just confuse casual viewers.