I am afraid the tragedy allready happend no matter what happens to MtGox. I am sorry for everyone having Coins or FIAT with Gox, but I think this could burn bitcoin to ashes considered the overall picture. Lets investigate the main reason for the cryptoboom:
We have a free currency not being influenced by politicians, governments or banks around the world. The money is just controled by the users. Thats fine. However, the other side of the coin is that companies around the world can operate in legal limbo. No doubt, if something similar happened to a bank, authorities would allready have taken control to investigate whats going on. From what we have seen so far even deposits would have been guaranted (at least up to 100.000 Eur as in Cyprus). In contrary, if the Gox guys dont run as milionaires given the arbitrage they can play, they are dumb as a bucket of shrimp...
Again, no matter what happens to Gox, the trust is gone. The merchants wont care about technical details. As soon as everyone realises that this could also happen (close and run) to their wallet-provider er even other exchanges, this migth be a death penalty to bitcoin.