What's wrong with finishing the Perl 5 compiler? Ten years ago, there was "undump()", then there was "perlcc", and now both are abandoned.

Go for it. I don't get this idea you seem to have that there's some organizational level above developers/volunteers, either in perl5 or perl6. The compiler stuff was a neat idea; several people put in the initial work. The parts people willing to put in the work found most useful have been maintained and enhanced as time goes by (B, B::Deparse, B::Concise, B::Xref, etc.). Other parts have atrophied in absence of someone interested enough to do the work. So who are you talking to?