I think like always, the US is a bit different. As I think I mentioned, I'm not thinking of something like a credit union, rather something quite different.
I assume your credit union isn't open source though? It's great that you're happy with your bank, but I suppose what I'm trying to get at is that banks can improve a lot, and just because it you're happy now, doesn't mean we can't try to do better. It's kind of along the lines of Ford's Quote:
“If I had asked people what they wanted, they would have said faster horses.”
I usually deal with my cu through my phone, and I do have to click "Mobile" to get the mobile site - but it doesn't bother me very much.