I played a mod for UT2K4 for 2 years straight and when I saw this game I saw the perfect opportunity for a game mode just like it. That mod was called "Deathball" (http://deathball.net/), it had the commentary similar to MNC and I think this engine and gameplay would mend well with this type of game type. Here is a video of a tutorial for the old mod... http://www.youtube.com/watch?v=1zJ6w7RhCFA and another from a match http://www.youtube.com/watch?v=g_mJ4CUwx4o I think this would be a sweet game type to have. Think about it.
