Hence, the call. Got people skills? Can you organize? Competently design code? Got free time? Work with people who are, well, Larry? Cool, this is for you. You don't have to be a star programmer, nor a parser or compiler whiz, though that certainly won't hurt. Enthusiasm's what you need, as there are people willing to help you out with the rest.
There are plenty of things you don't have to worry about. You don't have to worry about the language design--that's Larry's job. Nor do you have to worry about the interpreter engine--that's Dan's job. What you'll have to do is get the Perl 6 compiler module, and its standard library, designed and implemented.
It's a big job, but someone has to do it, and that someone could be you. (As a bonus, you get your own Secret Perl Cabal membership card and Decoder ring!) If you're interested, make your pitch to our esteemed, and mostly sane, Perl 6 manager-type person Allison Randal, at email@example.com.