Greg
A scroll back function regardless of whether you were recording or not would be a great benefit.
Many time when glancing at the screen I have missed something just going off of the screen and would have scrolled back to see it.
To try and review a recording to get to that point would take too long and a waist of fishing time.
I review my recordings on my computer at home, the screen is larger and shows more detail, but when you see something going off the screen then is when you need to see it.
George