I don't quite see what can be done better. There's an app, I can see my personal and company accounts, payments can be done in a few seconds, direct debits as well. There's also a website I can use to do the same stuff. I have had quite a few online banking setups in various countries and I can tell you there are much more cumbersome UIs.
What do I gain from changing to Monzo, Revolut, or the like?