Today, I noticed a large number of edit suggestions (to tag wikis as it happens, but I don't think that's relevant) by a user who doesn't have the reputation yet to make unsupervised edits. More than I could vote on to moderate (a limit I was a little surprised to hit, but fair enough). Should they have been “encouraged” by a rate limit to do fewer edit suggestions in a day? After all, while editing is good, asking and answering questions is far better for SO overall.
It is rate limited, if you reject bad edits, bad suggesters are auto banned from suggesting for a week.