A chatbot for banking wouldn't necessarily be a bad idea but it's behavior would have to tightly controlled. On the other hand, that might not be hard to do because the domain that it needs to work over is very small, it's like the old Expert systems of the 1980s.

Indeed -- why would it even need to be a GPT system?

But I personally do not want a chat interface. I find communicating with a computer via natural language to be more cumbersome than using a decent traditional interface. Perhaps some banks have worse interfaces than others, but I'm happy with what I have now.

If others want a chat interface, then great! Hopefully it can be an addition rather than a replacement.

I think it'll likely end up being voice commands, and typing is just an interim solution. For instance, the ChatGPT iOS app which was just released has voice to text.