This is exactly what I wanted to do. This idea has been sitting on my sideproject to do list for a while.
I know the cliché is that there are too many web frameworks. But give it a shot. Don't ask others people to use it, make it opinionated and use it yourself.
I want to build this blog generator using python, markdown, jinja and 'chose a classless css yourself'. Jinja is the templating engine, it is super fast and fun to use. If I weren't procrastinating I could ship it under a week. But I think it would be a fun project to do in Typescript if I ever decided to learn it first!
Bonus points if you auto-generate an RSS feed!