OK, if random people on the internet can constantly come up with ideas like this I just don't get what's going on with the "think tanks" that make sports games. I instantly pictured a share feature that allowed gamers to download each others created Kinect celebrations and potentially having a huge library.
All that said, we don't even have a share locker or custom situational music like in that other game from 2004, in Madden, so something like this is doubtful.
Woah woah woah, I am not just some random person on the internet... I have tons of idears that could go to great use. But anyways... continue on