Cost - of allowing SEH unrestricted access over congested/hostile areas = negligible, just a paperwork exercise
Benefit - to those few exercising such privileges = increased freedom - to those millions living underneath the privileged few = decreased through noise and additional risk as any failure is likely to lead to loss of life on the ground.
Analysis - pretty much a waste of time since - to quote Mr Spock - the needs of the many outweigh the needs (or desires in this case) of the few