We have a SaaS but when thinking about whether we would use your boilerplate, the honest answer is I wouldn’t because I’d have to learn the tech stack that you’ve decided for me. That’s a big learning curve than rolling out with something I’m familiar with.
If you have a boilerplate that limits tech to a few and simplifies the learning curve, there might be a bigger interest. Or you can go down the route of creating a UI version where non-developers can configure their own SaaS app for building an MVP, which would be useful just to validate ideas, raise funding and hire someone to fix it.