Absolutely, trust is a massive part of this. Many people have accountants so trust can be be given. Perhaps accounting institutes would be in a good place to do something like this. I'm probably going to be giving the organisation a limited Power of Attorney so they will need some serious credentials. Don't forget that your financial information will have real value which you may be willing to trade for the benefit of better deals i.e. they don't charge actual money for the service but get access to your spending pattern.

Lots of issues but the point I was making was simply that a) I want the best deal possible b) I'm lazy. I reckon I'm not alone either.