I've seen a case on a site currently in beta where a single user is perhaps editing too much. I obviously don't want to name names or call someone out here, so I won't be too detailed. The edits are generally small, and most are good - typos, spelling corrections, and such. Unfortunately, I think some are too trivial - changing straight quotes
"" to slanted/curly quotes
“”. Some may even be wrong - analogous to changing "colour" to "color" in a post from an Australian on English Language & Usage. The user has long had enough rep to edit without approval, and at this point has many times more edits than questions or answers; it's enough that (on a relatively low-traffic beta site) the edits can crowd the home page.
I'm sure the user means well, but I think a bit of a change might be in order; my general attitude is that small improvements are improvements, but it's possible to go far, and it's better to edit others' posts too little than too much. What's a good way to address this, preferably something other than a post on the site's meta that obviously calls out a specific user?