I can see how the issue of importance would be relevant. Is there some feature you can add, and then advertise, that would solve a burning pain for your target audience?
I believe so, which is why I'm working on a version 2.0 of each application.
In the case of Fileloupe, version 1.0 is "just" a file viewer at the end of the day. It's a really fast file viewer with some neat features, but it's still just a file viewer and thus it has to compete against everything from the macOS Finder to Adobe Bridge and Lightroom.
Fileloupe 2.0 adds the ability to create libraries that are persistent across app launches. Photographers have a dozen applications out there that let them organize their photos but there aren't many applications for organizing other types of media that use a similar system of albums, ratings, color labels and flags.
For example, videographers have few options for cataloguing and organizing their raw footage outside of the Finder and professional media suites. Fileloupe 2.0 will allow them to organize their video files in a similar way to how a photographer might organize their photos. (And it's not just applicable to videos. You could organize graphics, PDFs, documents and just about anything else.)
I've never really had a macOS user tell me they were desperately in need of a fast file viewer, but I have had many tell me that they want a better way to organize their files and media. I'm hoping to solve "that problem" with Fileloupe 2.0 and thus make it a much more essential application for a set of users.