Sheesh, this track really turns left. Think what it could be if there would be tunnel from first right hand turn after that series of lefts to turn 4(?). Weird and wonderful always left turning track.
There's no such thing as "noise pollution". There's uptight people who have moved in or build their houses into wrong place and won't admit it.
Qualitywise, well. You can see what you've done. I don't have to repeat it to you.
It's more like giving thanks to Kunos for excellent base sim for expanding, Ilja J for making that expansion and mod authors like you to eking out as much as possible to date.
Lot of people expect to receive ready and final product but when product is open to modding it's never finished.