The naughty fields are a big problem at all airshows as Joe Public has no regard for his/her own safety or understanding that safety areas are in place for a purpose.
The seaside events are not immune either despite Maritime Orders similar to a Notamn telling private craft owners to do one. Red Arrows v yacht mast anyone.
What we are seeing is a Ramstein style political knee jerk in which the system (CAA/MAA) has got to be seen to be taking positive steps towards minimising the ever present risk even further. If Ramstein is the model being followed; then airshows as we know it will soon be a thing of history.
The upper echelons of the RAF (RAF AFB) have no appetite for the risk associated with such events; nor the costs involved. There is virtually no need to promote recruitment as the ATC/CCF/UAS already do that sufficiently well.
Shoreham has been headline news for a week - and that is not about to change anytime soon. The whole affair is a tragedy and I feel much sympathy for the family and friends who have experience loss; especially those that were going about their business without association of the event. RIP