If you look at the list of Reviewers there are only a handful that are active.
(heck, some like BlackIrish have passed away and there are a LOT who haven't posted a review this decade.)
As I see it, we have a job to do (...and the pay and benefits are GREAT! LOL)... which, to paraphrase the "Review Guideline", is to encourage reads to read the stories and to help authors get better at what they do.
Here's the thing... there are only a few of us who are routinely and actively doing reviews. Those of us who are seem to have pretty much the same damn taste in stories which leaves a LOT of stories which hit our "group squicks" unread and unreviewed.
How do we fix this? Do we review stories that hit our squicks or do we ask Laz to cull the Reviewers List and start drumming for additional/more diverse Reviewers?