Skytrucker is right, IMHO. Rules & regs change and the retired will not necessarily have mechanisms to keep up with this. I think his argument stands, the kind of discussions I envisage may not be enhanced by the out-of-touch. The rest of PPRuNe will still be here.
What's wrong with a forum entitled "Serving Pilots' Forum - a place where current airline pilots can discuss issues away from the rest of us"
1) Registration with your real name and a scanned copy of a valid (not current) qualification. This information to be kept private by Pprune.
2) One time fee of (USD$10) to cover costs of admin.
A great idea - can I send a scanned copy of my $10?