A huge number of edits are formatting only. This is natural and good, since new users are often unaware of MarkDown.
It seems to me that a lower reputation threshold could be used for "WhiteSpace-Only" edits -- edits that do not create or destroy any visible characters post-markdown.
If such edits by users with rep 500-2000 were automatically improved, it would allow for many questions to be cleaned up faster, and would keep the review queue from being cluttered with content-free edits.
A bit surprised everyone hates this idea. I find these such a clutter to the review queue that I am going to stop reviewing.