Two things I thought about regarding the lore.

So, the first thing is, that Scott might have planed Fnaf 4. Remember in Fnaf 3 when Phone Dude talks about them finding a "Foxy Head" and how it might just be another "Crappy Cosplay" Foxy Cosplay? Well Dosen't that sound familiar.. http://villains.wikia.com/wiki/Big_Brother_(Five_Nights_at_Freddy's)

The second theory is just that Crying Child becomes baby. I know it's got a female voice, but it just kind of makes sense. Who knows? The flame wars about who the victim becomes could have been all wrong.. He could turn out to be one of the new SL animatronics!

Just thought I'd share my thoughts, hope you enjoy. Meds, signing off!