I was pleasantly surprised with Elimination mode.

One thing I think you guys should consider: lock powerups for XX seconds after the round starts.

It's pretty lame when the round starts and your opponent immediately turns around to sprint to the nearest powerup. Adding a delay to the powerup availability might lead to interesting situations where people are dueling over powerups, waiting for them to activate.

Also -- maybe expand the powerup radius and make acquiring them take longer? Then people can actually contest them.