If a webmaster knows why his site has been rejected, he could improve his site to better comply to the criteria of acceptance.
And that's something that doesn't help anybody. Not the editor. Not the surfer.
See, what you are describing someone who doesn't really care about the website or the subject, they're just trolling for links. If the website is "just barely good enough for the ODP today", they're going to drop work on it forever (except, perhaps, for adding advertising).
And if it's not "just barely good enough yet", they want to add the barest little bit of content, and bother the editor AGAIN -- for a site that, remember, is NEVER intended to be more than "just barely good enough".
And, since the web is always getting bigger, what's "just barely good enough" today will be "not even close to worth listing" by next weekend. But the chances are extremely strong that someone that reluctant to add content to his site, is NEVER GOING TO GENERATE A SITE WORTH VISITING ANYWAY. And he wants to bug the editor about it every time he adds a page. It's a five-year-old attitude when told to clean his room: pick up one more toy and yell "mommy, is it clean enough yet?"
Mommies have to put up with that -- and they have ways of applying negative feedback. Editors don't, and don't. So we don't play in that sandbox. Our social contract says, "suggest it once, or maybe twice; we promise to review it once. We don't promise to review it again, ever."
So make sure it's ready for prime time before you suggest it the first time. Or make sure the site is so good that any editor would want to tell all his friends about it immediately -- AND make sure it's so well SEO'ed that any editor looking for sites would find it.