I used to be able to Improve suggested edits if they were better, but I noticed some typo or somesuch. It even had a check box for "This edit was helpful" or something to that effect, thus giving credit to the original editor as a helpful edit.
However, I just noticed I can't do that anymore. All I can do is approve the edit, reject the edit, or skip it entirely.
What happened to the ability to improve suggested edits?