The same wreck would be less likely to happen.With the restrictor plate rules,the cars have so little horsepower(about 400-450)that they can't pull away from each other.Then you get those groups of tightly bunched cars,and if someone in front spins...ouch.
I agree,230 is too fast.I'm wondering if opening up the restrictor plates so they get about 600 HP,and making them add downforce might be the answer.
Any thoughts on what changes might help?