:-) Probably because it's a nightmare to set up for those of us who aren't that technically minded. Making morphs is easy, by comparison. But delta injection requires the creator to be able to read, and understand, and write CR2 code. Not so easy at all, unless like DraX, or Daz, you have a real investment in doing so. I've tried to follow DraX's tutorial several times and I just end up with a headache!