To focus on the feature niche or the audience niche? Multiple landing pages?

I'm working on validating an idea and having a real hard time positioning the value-prop.

I've spoken to a few people about how they approach the scenario I'm working on, and in every case I can see the issue that needs resolving. This is also a "scratch your own itch" project, so I know the problem well.

It's around data analytics BUT it only apples to a niche type of data... which is what gives it it's power.

However, the audience types using that data are vast and varied. I could instead focus on one particular type of user, which would be much easier... but then doesn't do justice to the fact the solution can address a multitude of scenarios.

So, do I go hard on the feature niche, or hard on a particular use case of that feature?

If the answer is "it depends", what's a good process to figure that out? Multiple landing pages?