Personally I'd like to be able to purchase crypto for cash without having to resort to an exchange. It was so nice when Circle was providing that service, even though that's just about the same as buying bitcoin from a bank. I have a feeling that these kinds of services aren't going to become widespread in the US anytime soon, but we'll see how it works out in the countries where banks are starting to do this.
One thing I wonder is whether banks are going to keep bitcoin on hand or whether they're going to act as a third party, just buying it from wherever when a customer wants to buy it from them. I don't think there's enough bitcoin in existence to allow banks to buy it in anticipation of customer orders, nor do I think they'd want to bear the risk of keeping a volatile asset like bitcoin on their books.