Another problem that arises is when "load controllers" use the "auto load plan" function, thus not actually knowing what is going on. The errors spotted by ramp agents have been attributed to this.
The ramp agents receive a reduced training package which is a cost saving measure. They still enter the specific details required for loadsheets to be produced and still hit a release button. The load controller simply hits another button to send a loadsheet via ACARS or to make it available for re-printing.
(Of course this may work well when completed all in house from one location), however for most long haul carriers, the flight is being operated out of LHR and the loadcontroller is sitting in an office in Bangkok. Cape Town, Istanbul without perhaps even knowing what the holds look like in real life!
Didn't VS have a few incidents due to centralised load planning a while back?
I recall some AAIB reports with various recommenations.