RE: Turbo props at Jet meets
I say no personally, if you say yes then where do you draw the line? Are turbine powered helicopters allowed to fly at a jet rally? Do you want to share the circuit with somebody hovering over the runway? Should foamy EDF's be allowed too that can't go faster than 50mph?
Would you take a turbine powered jet to an electric event because EDF's are allowed there and they are "jets"? Would you take a turbine powered jet to a helicopter rally because the turbine powered heli is allowed at a jet event?
Remember, there is a difference between a "Jet rally" and say a "turbine rally". When they host all electric Jet events turbine powered jets are not permitted despite being a "jet".
My personal opinion is that while turbine power is cool in anything, being Turbine powered or powered via jet propullsion does not make it a Jet aircraft. Of course it is just my personal opinion, nothing more.