Isnt the point of racing Progression? For the people who dont actuly build their cars themselves but instead send them to a shop to do all the work, i would think it might not be as fun, because you dont get as much enjoyment out of being able to go fast in something you built yourself.

But i can see how after awhile straigt lines can get a little boring unless your in a Competition and its down to tenths of a second to win.