This is a good question, and believe me, it's an approach I strongly considered. In the end, I couldn't find a system that would work well as a base for the fu

This is a good question, and believe me, it's an approach I strongly considered. In the end, I couldn't find a system that would work well as a base for the functionality I wanted to build. If I could have, I would have been all over it, but it would have required compromises to the simplicity and convenience of the service that I didn't want to make. No secret store that I know of is designed in a way that would make it scalable as a saas service like EnvKey without heavy retrofitting.