I'll give you a case in point. Presently, I an doing a lot of editing within Regional, primarily within the magnificant State of Arizona.
In the last month or so, the folks who edit in Arizona have been working hard to add enough sites to push the state total past 10,000. It was only on March 4 that the editing team pushed Arizona past 9,400 sites, and as I write this, the State is at almost 9,950.
While there are are 40 or so suggested sites awaiting review that can be worked, I've grown tired of working what we call "greens." So the last few nights I have been identifying small localities that have only or or two listed sites, and have been trying to bring the individual locality total to more than 5 sites listes.
This is definitely more work that just clicking on a submission, and I could probably add four or five suggested sites for every one that I am able to manually add.
But why do I do focus on tge hard stuff where there are easy pickings within sight?
There is a very high desgree of satisfaction involved in what I am doing, and I'm not in the "ODP Game" to see how many sites I can add in a short period of time -- I'm in the game to build a great directory. Thus, I would rather spend an hour of my time finding a single site to add in a dusty backwater town, than I am in adding 16 more real estate sites, three more car dealers, and yet another web developer whose site probably doesn't display properly with Mozilla.
I also get a kick out of adding churches, non-profit organizations and volunteer fire departments.
Not every editor makes these kinds of choices. Many of the newer editors rely heavily upon submissions while they hone their skills. Others seek to work on the directory structure. This is one of the joys of being an ODP volunteer. No one can tell me what editing I am going to undertake tonight.
The previous poster, jimnoble, is a meta editor. As such he has significantly more rights and responsiblities than I do. Yes, while I will certainly listen carefully to any advise or constructive criticism he passes along, he cannot tell me where to edit tonight, or what part of the directory I should work in. He is allowed to beg and whimper to try and make me feel guilty and want to help in a particular area, but as a rule, meta editors don't do the beg and whimper routine very well.
It is this freedom of choice that editors have to work when and where they choose that makes it impossible for a meta editor to look at a given category, note that there are "n" sites awaiting review, and make a prediction as to when they will be reviewed.