It's simply unacceptable to lose 7% of all bitcoins and say now that mtgox is out we can go on.
Bitcoin will lose its credibility and will fail. The whole community has to understand this and join forces to discover the truth and find a solution to recover 100% of all lost/stolen coins. The only way for bitcoin to survive is to show the real power of the blockchain.
Bitcoin will not "fail" because somewhere, out there, someone will be mining and keeping the blockchain alive.
BUT - There is a significant "credibility" at stake for Bitcoin in the MtGox case. If these coins are not recovered in full, then Bitcoin will loose credibility. I have been a big proponent of Bitcoin for quite some time, but now I am actually considering to look at other crypto currencies. If I can't trust the Bitcoin community, maybe I can find a crypto community that I can.