I'm waiting for all the Pro-Nas AOPA guys to come on here now and say, "look the system worked, they didn't hit". Well ask the crew of the Virgin Aircraft how they feel about TCAS saving their lives and I think their opinion of NAS will be a little less complimentary.
It sounds horrible but the safest thing long term for the flying public would be to have a few more misses like this (with no hits!) and to show the system for what it is....DANGEROUS.