This reminds me of the dread and fear about "ruining" classic films when the technology to color them came about. In the end it was really a non-issue. Sure, some got colored but in the end it was just something paying audiences didn't care about. The film industry has been replacing faces for years--especially to put a star's face on a stuntman or stunt dummy--and with computer animation they're often replacing the entire actor. This is just another example of once-high-end technology trickling down to the unwashed masses. The special effects that your average 12 year old can do now put early Industrial Light and Magic to shame. Will we see those uses you predict? Probably. Wide-spread? I doubt it. And as for using it to perpetrate hoaxes, I don't know why anyone believes anything they see in photos or on video these days. We're long past the time when photographic evidence was trustworthy.