VT1:
OHJs involve a 'cross wind join' which in my opinion is suicidal at a busy airfield with a mix of low and high performance aircraft
I don't disagree with that - joining procedures should be appropriate to the airfield and its traffic. At an airfield with a long runway and regular high performance traffic, there is a danger of conflicts between aircraft joining crosswind and an HP a/c taking off or going around. So it might well be appropriate to have a different procedure to deal with that. I have to say though that if you're the pilot of a high performance aircraft you will be well aware that your rapid climb might put you into conflict with crosswind joiners so you would surely make special efforts to (a) listen out to get a picture of any joining traffic, (b) look out before rolling and during initial climb to identify any such traffic and then (c) if you know or believe there is conflicting traffic, reduce your climb rate or stop your climb so that you're not co-altitude with the joiner as you pass the upwind end of the runway.
But my frustration is at airfields where there is a published OHJ procedure that is appropriate and works, but some people think it's acceptable to ignore it. It's particularly bad airmanship when qualified pilots do this at airfields where there is regular circuit training and students are following the correct procedures.
All I'm asking is for people to project their thoughts a little further than moi moi in the cockpit getting down by the most rapid method when joining a circuit.
NS