Now that the core Pd docs (i.e. /usr/lib/pd/doc/*) are split out into a separate Debian package, I think it could make sense to package the PDDP docs in a kind of mirror or replacement package. Something like pddp-doc. Jonathan, in particular, I was thinking that since you have wanted to work on all the patches there, we could set it up so the pddp-doc package mirrors the whole /usr/lib/pd/doc* directory and patch structure, have this in SVN, git, or whatever somewhere. Then people could choose the pddp-doc package if they so choose.
Here's the files in puredata-doc: http://packages.debian.org/sid/all/puredata-doc/filelist
.hc