The DAO didn't fail, it was hacked. There is a MASSIVE difference.
"the safe didn't fail, it got cracked by the burglar".
A smart contract "getting hacked"
according to its own terms, is about the biggest failure you can imagine for a smart contract.
It is the equivalent of having on your fire insurance contract small print that says that you owe the insurance company 10 times the value of your own house if they re-imburse you for fire. And then you are amazed that you're broke whenever your house burns down and they send you a lawyer to get 9 times your house's value from you. Wonder whether you would consider that fire insurance a great success or a failure.
I hope there is a DAO2.0. I'll invest in it in a heartbeat.
Give me the weekend, I'll write one for you. On ETH if you want...