Having a place to record members who have on art contests, scavenger hunts, or other site sponsored contests is not a bad idea.
First of all, the proofing area is used for Manga Reviews. Not Chapter one's. There's a major difference between those two.Reviewers are welcome to post unfinished reviews in the proofing area should they want fellow reviewers to proof read there work, provide feedback, or ask for advice. I would caution about providing unsolicited advice, but there is nothing wrong with using the proofing area when seeking advice from fellow reviewers.

" smiley was added only for this very occasion.That would require a plugin (which may or may not be free), if such an option exists at all. It's a better question for our Techs.What about a not-reviewer-eccentric-suggestion once in a while?
My point is. What I think MH lacks, and what definetelly could ease the use of the forums would be the function to save your posts before publishing them. There are tons of cases, where this function could be used, starting from cases where large posts are made (e.g. Reviews, News and just large posts in the disscussion/spoiler threads) and ending with a possibility to auto-save the post if the user doesn't writes anything new.
I mean, how many cases were there where people started making a large post, then something happened (e.g. browser shuts down) and everything is lost? I wouldn't be surprised if the "" smiley was added only for this very occasion.