They provided a great service to the GA industry and especially to inexperienced or newly licensed pilots.
I aerobatic competition & in some car races, we have guys to make last minute checks of harnesses, helmets, etc. Maybe FS should employ guys like that on the tarmac too ? - as a service to GA? Maybe go over the pre-flight inspections too?
Instructors are supposed to give inexperienced or newly licensed pilots support. If its not happening there, then we need to look at that at the quality of schools, not apply a band-aid. Sooner or later you have to take responsibility for your own actions.