What I've noticed is that we become Conversationalists at 1000 posts. That's a nice number, but some of us have a lot more than that. I'm going on 7000 posts right now. That's a pretty steep gap. You might want to add 4 or more ranks in between there. Here's what I advise: Add ranks that go to at least twice as much as the person with the highest amount. Chrismen has 4000 edits, so make a rank at 8000 or 9000. (I know Brad Kim has Over 9000, but he's admin, he has his own rank) I have 7000 forum posts, so make a rank at 15000.
The people higher up are the same rank as some of the people further down. We need ranks that fairly represent all members, and ranks that nobody has reached so that there are still ranks to shoot for.
Also, editorships shouldn't count to any kind of rank whatsoever. Being an editor isn't a contribution, editing is.