Totally agree with you guys. It's such a same that everything else looks so good, but these big neon looking brake markers are total eyesores.
SimBin side-stepped the question in one of the Q&A's but I thought they hinted they would have an option to remove them. I hope they do it soon. I haven't heard one person make a positive comment about them or say they improved anything in the game.
Get rid of brake markers, add AI, add multi-player and this thing could succeed! I think we are all desperate for a good finished racing game and are tired of all the alpha/beta/WIP business that has been going on for what seems like years.