If you do have good sources for something, e.g. there is even a relatively small biographical section on someone in a published book, or a journal article, or something similar, the separate "notability" requirement has been increasingly going away, so that "but I've got sources" trumps it. I wrote a bit on that last year: http://www.kmjn.org/notes/wikipedia_notability_verifiability... (I also discuss some of the history around these requirements, some of which were motivated by trying to do something about Usenet physics cranks who found Wikipedia and decided it'd be a great place for articles on all their pet theories.)
I've been systematically going through several references and adding articles on everything in them, and haven't run into people objecting to my articles or trying to delete them for several years, since the end of the more "notability" focused era. Now as long as my articles include some references, they seem fine. One of my projects is marching through the Allgemeine Deutsche Biographie adding articles on random people who were mayors of Prussian towns in 1850, and that kind of thing. There's even a Wikiproject trying to organize efforts to cover everything in that particular reference: http://en.wikipedia.org/wiki/Wikipedia:WikiProject_Missing_e...
I do think it's also valuable for there to be other projects, which catalog information that can't be referenced well. For example, Know Your Meme does a pretty decent job of doing original research in history-of-memes. There are several genealogy projects that attempt to catalog people more exhaustively as well. But those are pretty different projects from Wikipedia's goal of summarizing stuff that's published in the existing literature, with references. Wikipedia doesn't have to be the only wiki on the internet, so I don't see why those original-research projects can't develop in parallel.