Tenfour, nice thought provoking post.
It probably is simply wrong in 2016 to accept an aircraft that is suspended in the air by just three attachments knowing that failure of one attachment would be immediately catastrophic. To accept that "it hasn't happened before" is of little comfort. By comparison the S92 has four attachment feet. When these feet, on the early MGB's, were experiencing cracks Sikorsky confirmed any one of the feet could become totally severed (detached) and the aircraft will continue to fly for up to 30 hours before other attachment feet become over-stressed. This condition would be detected early by a special HUMS tool.
Does that make an S92 safer than an EC225? Cougar may argue otherwise.
All helicopters will have some inherent weakness when compared to other models. The ideal is to get all the best features into one aircraft. But who pays for it.
The EC225 is cheaper than an S92. The AW189 is much cheaper than an EC225. There's little doubt that as in life the same applies to helicopters - You get what you pay for.