I have discussed this with David Warring (zef:dwarring), the author of most of the very usable Raku PDF modules adhering to the approved, official ISO specification for PDF. Following is a general statement of intent to work on the official code line
(WHEREVER THAT IS OFFICIALLY ESTABLISHED).

DRAFT STATEMENT FOR HIS APPROVAL: He agrees that the OFFICIAL repository is the proper place for the repository for the Raku interface with PDF handling modules and the home of subroutine 'rakudoc2pdf' for rendering 'RakuAST::RakuDoc' to PDF.

Considering the draft statement above, and subject to change, here is MY initial proposed plan for development in that repository:

1. Use the current RakuAST::RakuDoc::To::Text code being developed by Will Coleda (#raku [Coke]) as the basis for the PDF development where applicable.
2. Follow the published version 2 RakuAST docs as shown on the https://docs.raku.org website starting at https://docs.raku.org/type/RakuAST/Doc/Block and ending at https://docs.raku.org/type/RakuAST/Doc/Paragraph.
3. Provide a usable 'rakudoc2pdf' version as soon as feasible in order for users to evaluate it for their own projects. (I will use it for own my PDF projects, including published releases, with appropriate caveats to warn of deprecated versions and any user requirement for the upgrade.)