Switched to Wero and haven't looked back.
What do you mean "some banks"? I thought the whole value proposition of Wero was instant bank transfers with SEPA but using phone numbers?
On the payment provider technology side, you're right, but the wallet feature uses phone numbers (and I think email addresses) so you can send each other money without sharing your IBAN (which is slightly longer and probably not in your contacts).
I've read once that there are paid app testing labs which test if an app has root and custom ROM detection and when they don't have that it's a minus point on the report.
UK politics has been quite isolationist, though, so I doubt the banks will see much in interoperating with the rest of Europe.