I'm also interested in seeing this.
I can't imagine anyone writing a Ranma fic where someone bashes Ranma. The guy gets seriously wanked off in fanfic. The guy simply can't do wrong. He can be human, but actually being _wrong_ AND being called on it? Pft. Doesn't happen.
Naruto, the closest I've seen would be The Truth Decays. Jiraiya scolds Naruto for being naive and subordinate. Naruto himself is portrayed as a bit of an embarassing/stupid dork, and is seen by such even by Hinata.
http://www.fanfiction.net/s/4052439/1/T ... _bDecays_b
Of course, that means the author gets a bit of flak for that in the reviews.