I think the only singular driver of such project is YOUR needs. There are gazillions of seemingly obvious tools that should exist but either no one developed it

I think the only singular driver of such project is YOUR needs. There are gazillions of seemingly obvious tools that should exist but either no one developed it yet, or the ones existing are decades old and outdated. Nothing else will drive you than your own carving for that Thing to be created. Everything else - internet cheers, karma stars, donations - will be just a side effect that keeps you maintaining it. I wouldn't think about if it's "too simple" or what tech you end up using.