MtGox's problem is not "malleability", it's the fact that they didn't submit transactions to the network, at the same time making internal hashes public. The answer to Mr. Karpiles from the core development team should be clear and resounding "NO". Bitcoin is fine as is and MtGox should pull their $#!+ together. I could not believe the idiot dared to blame the Bitcoin protocol.
Bitcoin doesn't have to change one bit to come up with a standardised way of making these kind of hashes. I prefer we all come up with one that has a fighting chance to get included in the bitcoin client (not chain!) than every cat and dog inventing their own transaction numbers.