An idea has come to me that Instead of trying to remove as much curbs as possible when making races (especially with the stunt track props), make the most of them by using on parts such as long straits to give extra speed and a more intense race. Also have them in the driving line so you don't have to go "curb hunting"
It'd be better to try it yourself if you unsure of what I'm going on about here.
I've only had a couple mates to test it out with me and they seemed to really enjoy it, but would like expanded feed back from more people.
I've made 3 tracks with this technique used, they are also part of my IRL based race tracks. Even if you're not a fan of these type of style races, I'd recommend trying out my Yas Marina one
1: rsg.ms/7348465 (Yas Marina Circuit GP UAE)
2: rsg.ms/863b623 (Albert Park Malbourne GP)
3: rsg.ms/2a4936a (Monaco GP Monte Carlo)
and also made a little drag race test : rsg.ms/d03fb51