This is exactly what I did with my only NATO strap
Because it was way too short, the buckle would never reach bottom side of the wrist.
I removed the part of the strap that goes to watch lugs and turned it into a single pass.
Now I can place the watch exactly where it needs to be on the strap, so the buckle is exactly where it doesn't trigger my OCD
The part where you trim the end of the strap, in order to shorten it, was pretty neat!