Why the models were being killed
I've randomly seen complaints on here about the editing, and why the models were being killed. Someone kinda hit on it, and I apologize if this is overkill, but to me I figured it out, when Susan Dey went to Matrix, and they were scanning her, the assistant, that was prepping her for the scan, told her, that this is all she needed to do, and would be paid 200,000 a year, for virtually doing nothing after that point. So to me, they had the surgery so they'd be perfect for the computer needs, own their image for whatever they wanted, promise them almost any kind of money, that they had no intention of paying off on, so they killed them. To put it simply, they didn't need them anymore, had no intention of paying, and didn't want them around to see what they used their image for. The girls wouldn't have been able to go to another commercial agency, because they owned the rights, and it also would've exposed what they were doing, and the mind control.
Like another poster said, they didn't feel they had to explain all of that for the ignorant viewer,