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It is somewhat a trend right now to play "straight lines" in cf3. People seem to find it fun to try playing without using changing direction. But it is difficult. If one doesn't concur she or he ruins it for everybody.
Therefor it would be to add some crazy arenas. Arena X and Arena 999 where e.g. "straight lines" is being played, where you choose your direction during the first 10 seconds before your curve starts to leave a mark. Then it all depends on how well you planned your straight line. If you collide with your own tale or other curves.