Why have interviews after a survey?
The survey was extremely valuable to validate - and even invalidate - certain assumptions. But, the questions focused more on "what" users might need and "when" they want it.
With interviews, I could explore more deeply "how" and "why" they need and want certain solutions to their problems.
What else was learned here?
While versatility is appreciated, even financially savvy users don't necessarily want to spend a ton of time dealing with their financial tasks. So, efficiency in layout, navigation, and functionality is a top priority.
Further insights summarized below…