The idea is a good one, the idea of accessing material online came out of something I suggested (and I seriously doubt I'm alone in doing) in suggesting we find volunteers who could be trusted to verify the content of books being used as references in the case of more contentious and potentially problematic BLPs - asking people to go to libraries, find books and verify what is being inferred in a reference actually exists in the book.
If we can get access to those books for a small pool of trusted users, administrators and such, then that would be brilliant, but I see a couple of problems, I'd say 25% of our biographies are on fairly well known people with plenty of reliable material freely available online, the Einsteins of this world, the bulk of our biogs, say 50-60% are on less well known people where information is harder to come by, but most likely accessible through something like JSTOR, the remainder of our biogs - they would need access to specialist press and publications, stuff that academic targeted resources like JSTOR doesn't really include.
Of course, JSTOR and access to scientific journals could be useful in improving the content of our articles on various scientific stuff, various history journals for our articles of history and so on.