Aside from all the issues that plague bitcoin, what would be a more secure way of 'touching' the wallet.dat file? Keep in mind that: 1) IO is expensive 2) th

Aside from all the issues that plague bitcoin, what would be a more secure way of 'touching' the wallet.dat file? Keep in mind that: 1) IO is expensive 2) the file will not be encrypted 3) the file will/should not be hosted on the same machine 4) the file will be accessed in excess of 1,000,000 times a day; maybe more. The only thing I can think to do is do all the transactions with imaginary bitcoins until the end of the day then, at night, push all the transfers; almost like banks do.