If that's the case, I'd hope that the core developers would continue working on Bitcoin's problem with scaling, and not escalate the malleability thing much at all.
One more time.
Bitcoin DEV have nothing to do with
INTERNAL MtGox API ... that it "emulate" bitcoin transaction (internal balance to reduce bandwidth on bitcoin network ... and don't send the amount of bitcoin buy AND sell with a 0
INTERNAL balance at the end).