Ask HN: How to pitch when you're not solving a problem

Hi, we have launched a startup couple of months ago with a seed round and given the traction we have we are now raising our series A. Most the pitch deck I've seen involve a slide "problem you're solving". Our startup doesn't really solve a problem, it just helps people do what they used to in a fun way. How would you pitch something that doesn't solve a real problem but improve what's existing?