I agree, especially since I did not do this during my first round of applications. If I am rejected during this round, I will email regarding improving my application strengths for the dreaded "make or break" third round of applications. If there is something detrimental that is consistent throughout my applications, I would like to know regardless of the potential awkwardness of the request. Remember, adcoms want applications to succeed as well (at least this is what I tell myself).