491 reviews with an average of 775 characters.

640 character average if you count the reviews I made that were N/A.

I wouldn't remove the ranks altogether, but I would make review length factor in, like FQuist said. Also, maybe N/A reviews shouldn't count towards your review status, because a lot of people, and I won't mention any names, post a level, make a short description on it, then write an N/A review for it wrapping up the description. If you uploaded 500 levels and made an N/A comment on all of them, you're not really an Ultra L33t Reviewer, as J2O's ranks would put it.