You realize that many of those complaining are developers, right? Apple went through dozens of internal builds, prior to the developer release, to reach the point they are at now. In past developer betas, Apple has fixed bugs, tweaked existing features, and improved performance. But Apple has never made significant aesthetic changes between the first developer beta and final in the past. This may be a special case, but hoping it is a special case doesn't make it so. Apple certainly hasn't shown much interest in developer complaints about the font or the aesthetics (which create usability issues) so far; they've even told some developers not to submit more reports on visual-type issues.