I've been thinking about it, and after riding the track a few times, I am not going to permit the change of the launch speed, but, I will allow the addition of trim brakes only on your section that you built. But be warned, don't mess up the speed so much that it's going to make it increasingly difficult for the rest of the people to build as public humiliation may result
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Anyways, track approved.
Remember, the first person to post "WIP" or, just the first person to note that they are working on it, gets to do it.
And the rule is that you have to wait for 3 people to go after you before you can go again, so LuckyK, if you post first, then yes, you can go.