Excellent post. When I was an editor, I'd hit a dream site like you suggest and list them immediately. Obvious spam got deleted immediately. Sites that were "iffy", meaning I had to really dig through them to check for deeplinks, re-write an accurate description, etc. I always left in "Unreviewed" until I had more time. The real nightmares stayed in Unreviewed for months. Poor submissions, as well as spam, were the bane of my existence and they made it take that much longer to get to the good sites that were correctly submitted and deserved to be listed.