I'm going with "still too creepy; no." I feel like it has all the downsides of facebook without the one upside: linking you to people you might have already met but not thought of finding on facebook/just plain forgot. On Dreamwidth, we've most likely only interacted with that person under this name on this website and we'll continue to see them in the same places we've met them. (Unless you see a way to use it that I'm just plain missing.)

But the idea itself isn't bad. Now, if you want to advocate for some kind of journal stat tracker for this kind of thing, as that's what I've gathered from your quotes above would drive a friend/ban suggester, that would be some nice information to know. Though I wonder how many people would be interested without the interactive component of suggested action.