2. I'd develop an online wallet service for my account holders. So say Joe Bloggs has a current account and savings account with me. I'd offer to allow him to set up an online cryptocurrency wallet with me as well, linked to his current account. I'd market this as a cryptocurrency savings account. If Joe Bloggs wanted to cash out some of his crypto savings, I'd allow him to sell at the click of a button, with the cash appearing in his current account to use.
I am not here to trust any third party to hold on to my coins,when i can store them securely and safely why would i trust a third party or a bank with my money,i really do not need any bank to hold to my coins since i can very well store my coins safely and even then if a hacker attains the private key ,then your money is lost,so you better be your own bank rather than trusting others. 