hi!
This point is actually not a problem of Pd, but one of its user base i.e. it's our problem. Dave Sabine did some terrific work on his PDDP project, but those aren't example patches ready to use. As Pd has no company behind it, this is a job for the community.
one of the problems in this context is the increasing amount of different projects and websites offering patches, code, documentation, etc. for pd. there is millers site, the iem.site, guenters works like cvs, pure-data.org, pdp, pddp , pdpdp...
there IS a lot of documentation and examples, one just has to find them. beeing a newbie and trying to find pd ressources must be a lot of work.
i think it's not a realistic idea to centralize these ressources on one page, but maybe a (more or less) complete linklist at a central location like millers page or the iem-pd page (and in the README file of the sources) with a good summary of all the projects spread over the net could help.
regards d13b