I suspect no one's going to bite here at PM. I encourage you to visit with Perl 6 folk on the #perl6 IRC channel
and ask about Perl 6's PEG, its current and anticipated future performance, Graham Hutton's work, boost.spirit, your code, and development of related modules on CPAN for Perl 5. Larry Wall is often on the channel with the nick TimToady and I'm fairly confident he'll be delighted to discuss such matters. And you might bump into Patrick Michaud who has written numerous grammar engines over the years to match Perl 6's evolving design.
(I read and summarize the daily logs so I'll see your discussion there.)