This idea is way too late to put in place for this year's Fanime, but what about for next year? (or future years?)
Wouldn't it be cool to do a concert with a local symphony/orchestra covering anime and video game themes and soundtracks? Something similar to the Georgia Philharmonic Symphony's performance a few years back at AWA (Anime Weekend Atlanta) 2014.
They did a really great job and it's evident everyone had a great time.
Just a suggestion