I can tell you right now what I want from a "bank" as a consumer: Putting the consumer first, not seventeenth or whatever I typically experience with retail banks.
As a random example, I had $3,600 stolen from one of my accounts by transactions labelled "Microsoft Online Services" or something like that. The bank reversed most, but not all of the transactions, and then had the nerve to lecture me -- an IT professional more than a bit knowledgeable about security -- about how somehow this was all my fault.
Turns out that banking security and reliability from a customer's perspective is absolutely insane. It's totally ass-backwards. It's the opposite of the Apple experience that made that particular company the biggest in the world.
1) Every field in a credit card transaction is attacker-controlled. They can put down whatever business name they want, whatever text they want, etc...
2) Every field in a transaction history is either an alias ("operating as xyz pty ltd"), an abbreviation, or just outright confusing.
3) Transaction histories and "you paid $ to X" notifications often turn up hours or days later. There's no geo-location or any other strong identifier linking these to the actual business because of (1) and (2).
4) There's no receipt details in the transaction history. "XYZ pulled $123 from your account... for reasons. It's a mystery!"
5) You can't see who's got recurring subscriptions on your account. You can't trivially cancel or block someone from pulling money from your account.
6) Some banks now show categorised graphs of what you're spending your money on, but they're guessing. They don't actually have the info of where the money went, so this is useless. You can't figure this out yourself either because of the tiny amount of info available to you.
7) You can't use your transaction history for warranty purposes, or any similar thing. You have to keep tiny pieces of paper that fade rapidly... which is I'm suuuure is just a coincidence, right? Right?
8) My bank claims I get notified if a transaction occurs on my account. This is a lie, they only notify me of some types of transactions, and not reliably either.
9) Trivial impossible-travel protections are not put in place. If my phone is used for a payment in a "physical store" while the GPS says it's in a different continent, pop up an "Approve Y/N?" prompt at a minimum!
10) You can't generally limit a vendor's access to your account if they have your credit card details. You can't restrict them to a single transaction, a fixed amount, or no-sneaky-subscriptions.
11) With shared accounts, you can't generally tell who made a transaction, even if they have individual cards and/or mobile devices. (You can sometimes, depending on the bank and the type of account, but it's not consistent. This is what happened to us: Both of us assumed the other partner set up a valid subscription.)
Etc, etc, etc....
I could go on for hours.
Unfortunately, like many people of said, the inertia of the incumbents and their moat of regulation makes this kind of thing nigh impossible with backwards compatibility.
Some org like Apple or Meta with very wide reach might be able to force vendors to jump through their hoops, which then will drag the traditional banks kicking and screaming into the future.
I'm not holding my breath.