That won't help if the cryptologic basis as such is insecure, i.e.: private keys are recoverable with a method we don't know by now, but only a hacker, for example. Again, think of poor randomness.
Regarding multisig: for now that method seems to be safe. But who knows exactly? What if both signatures/keys were created on the same system? With poor randomness or other failure? Then it might even be easier to compromise such a wallet or the private keys, because the signature of the poor randomness is in both keys, which might make it less complicated for a hacker to decrypt them than decrypting a single one, only because of similarities in the keys.
Again: all hypothetical, but ... see above.
Multisig is the solution..no wallets multisig have been stolen!
all my billion coins in wallet windows qt, paper extra randomless wallets and on cryptsy locked (12hour) i think are safe...
What if Cryptsy closes its doors because of a hack? Then the coins there are also gone, even if secured with 2FA and all other means. The question then is only, are they financially strong enough to recover the losses of their users/customers, AND: are they willing to?
in the wallet that we currently use, just keep the coins that we are willing to lose
Regarding the current Mooncoin-wallet, Titan reported the Mooncoin-wallet to be safe, after his investigations, at least the source-code -->
https://github.com/realmooncoin/mooncoin. Btw: this is still the old one, created by deaconboogie. It is still the latest.
As far as I know, peme hasn't found anything either so far, aside from an old OpenSSL-version with the heartbleed-bug being used to compile the binary-wallets. But as I understood it, it is not critical for the normal use of the wallet.
According to both, it is difficult to check a Windows- or Mac-binary, so I hope they are still working on that, to get more information. If any expert for this passes by and reads this, please could you also check the Mooncoin-binaries, in order to help the community?
I hope that peme stops by soon, to inform us about the current situation.
Edit:
Btw: Have you read the latest information on Cryptoine.com on how they will return the remaining coins?
https://cryptoine.com