I totally believe there's a 570 gmat in the new class but how did you find out info like that??
Anyway, I know it's a bit late to chime in but I personally think that the optional essay is ideally as short as possible since certain members of the Adcom have even said (though perhaps jokingly) that the best way to use it is not to use it at all. I guess that's logical considering that the optional essay is meant to allow applicants to address perceived "weaknesses." Anyway, I think each "weakness" can be addressed in 100 words or less. So if you have 3 weaknesses, no more than 300 words. I think under no circumstances should you have over 500 words though, since that's the length of the shortest essay this year. Ideally though, shorter the better! As for myself, I wrote 161 words to address 2 issues.
And a hearty congratulations to SoniBuBu and HappyBunny and everyone else for their completion. I can't wait for us to watch the admits roll in
And Solaris, you are wise to take the weekend to check out your essays one more time. At this point, the difference between a 8/29 and 8/31 submission is negligible so you might as well give yourself the chance to find that perfect word choice or perfect transition or perfect new conclusion that'll make your strong essay into a powerful one
Hope all's good in the hood for everyone!