You can ask me once you need the adress where to send to your registered letter 
I don't need to ask. Their address is on the bottom on this page, and I know they accept registered letters (use FedEx instead, it is usually faster and cheaper): https://support.mtgox.com/entries/21651045-AML-Account-Statuses benefit of course ?
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Can you estimate how many coins were stolen by forced -majeure in bitcoin protocol ?
Even if all the BTC in stuck transactions were stolen (which is impossible, because most of the inputs were spent in three to six stuck transactions), it is still only a tenth of what MtGox has made in fees (counting only BTC fees) over the years. It is certainly not going to bankrupt them. You have to make up something more credible than that if you want to make people believe in your scam.