This is essentially creating a more user-friendly front-end to aggregate content types.

Someone would need to be able to sponsor it though. To be blunt, very often good people with little to no budget desire enormous sprawling websites, and it's a kind of endless game of adding new features so that the sites can keep growing bigger in scope without funding. I'm happy to go further down the rabbit hole, because there's lots of value there, but it's too niche and endless to not be done without sponsor(s) to cover the implementation costs.