What I learned
Beyond a good idea,
I now look first for the customer's reason to choose.
The biggest shift was realizing that an idea I like and a service customers need can be different things.
Learning to identify needs, compare ideas against criteria and anticipate market reception after launch changed the standards I use to judge a plan.
Application to banking and finance
When planning new banking or payment services,
I will confirm why customers would choose it before the idea.
When designing a new service or customer experience, I will start not with features but with which customer feels friction and when.
When several ideas emerge, I will compare them on customer benefit, feasibility, profitability and differentiation, validate on a small scale first, and then expand.
I want to keep checking whether customers have a real reason to choose and keep using a service, not just whether it is new.