I personally like the secondary venues for some sports, namely Rhythmic Gymnastics, indoor Volleyball and Swimming. More venue diversity is good IMHO.
http://www.scribd.com/doc/253328375/Boston-2024-USOC-Submission-4-Sports-Venues
http://www.scribd.com/doc/253328375/Boston-2024-USOC-Submission-4-Sports-Venues