From what I have read, StackOverflow is having a huge problem with close review questions. I just crossed over 400 rep on StackOverflow, and would like to help. I have been dismayed to find, however, that you can't until you have 3000 rep. Why is this? Could it be at least changed for a short time to fix this?
Determining whether questions should be closed is hard. It takes a fair amount of experience with the site to effectively determine whether a question should be closed, and what it should be closed for.
Allowing users to review items in the queue without enough experience using the site to make effective judgement would cause more harm than good. Having less reviews, but quality and effective reviews, is better than lots and lots of very poor quality reviews.
We learned this lesson well enough with several of the other queues. Queues such as the first/last posts queue ended up causing way more problems than they solved for quite some time when they came out because of the shear number of inexperienced users not making quality reviews.