I find that features could be split into several categories:
- marketing related -- improvements of your marketing site etc.
- improvements of UI / onboarding -- lower down learning curve for your users
- feature requests from existing clients -- improve churn. Increase value of your product.
- features that can potentially unlock new markets -- whole new thing without guarantee for success.
When you are early on (under 100 paying clients) you don't get much feedback so you can't evaluate the demand.
How do you go about it?