A spectator mode could also help with this, seeing as it would allow us to zoom around during the match, and let us make videos in Fraps while utilizing the mobility and angles of a spectator mode. I haven't seen or heard of any Crysis 2 mod that lets us play weaponless and HUDless that would allow something similar, so I believe this kind of a feature would be great!
Either way, this would simply add a coolness factor to the game, letting us replay epic gaming moments over and over, and also promote the game in itself from the number of well made videos that would pop up everywhere in response!
I hope to see something like this so fans can expand the popularity of the game through their own imagination!
-Zanthir