it seams to me the notam is a result of "its my airport, so bugger the rest of you, i want priority so i can make money faster and screw the rest" i didnt know owning an airport gave the owner the right to dictate what happens above it.. YSBK doesnt have issues with me flying at 40kts on approach in the same airspace with helicopters, Big piston twins, Learjets and Bae146's
as said above, its just coutesy to allow faster aircraft right of way, yes, it happenes at YWOL, and other places where jump aircraft and other stuff operates, its called being friendly. no need to be told to do it.but when its notamed, and demaded you give certain people preference, well, then....
as for the 650Kg limit on aircraft, there is no safey case there.. just granting someone competitve, or uncompetitive advantage over someone else.
and as for allowing jumpers to board in a runup bay? whats the terminal building for then? runups?