Would it be possible to have the cycle trails be turned off when you hit a certain key for the duration that you hold the key in? Kinda like a reverse "Spy Hunter" oil slick.
Would be possible, yes. We probably won't directly support it in the code code, as far as I can tell from this distance; it doesn't look like the additional key would be worth it. But we can prepare the game so a modded server can define a custom key with such effects.