BrianM

I agree with previous commenters, plus, nothing at all about determining exit separation?
Oh, and nice job rating your own article...

We've had a perfectly good term for this for a very long time - it's "forward throw". It's in the CSPA PIMs, the USPA SIMs, and several other countries equivalents. It was in common use when I stayed jumping twenty years ago, and still is today. I'm surprised nobody here seems to know it!
"If the previous skydiver or group is still under the airplane, do not jump." sounds suspiciously like a variation of the 45° rule.