interesting though.
as you say, accounts are now (sortof) more lucrative - though i'd bet they track where cash is actually cashed out to *very* carefully, which will screwup the hackers.
also, by taking the purchase of gold away from third party sites, it means people are less exposed to scams and keyloggers etc in the first place.
i mean, D2 has always had a thriving �-gold market anyway, its just on dodgey sites at the moment.
linking an account to a bank account isnt necesarily unsecure either - so long as its a one way thing. hopefully you can link it to a paypal account, and from there to your bank account - so its covered by paypals liability even if it does get nicked.
i highly doubt i'll use this system much (probably just for selling things occasionally), but i think it'll make things safer and more secure for people that *do* want to.
edit:
also, if you want to avoid people who mightve bought items with �s....
"Can Hardcore-mode characters use the currency-based auction house?
No. Hardcore characters will only have the option to buy and sell items together with other Hardcore characters via a separate "Hardcore-only" gold-based auction house; they will not be able to use the currency-based auction house. Hardcore mode is designed as an optional experience for players who enjoy the sense of constant peril that comes with the possibility of permanent death for a character. All of a Hardcore character�s items are forever lost upon that character�s death, so to avoid the risk of a player spending real money on items that could then be permanently lost when the character dies, we decided restrict the use of the currency-based auction house in Hardcore mode. "