Did Tolkien even plan to fill in the other sections of Middle-earth?

[Mithalwen]

While Tolkien may not have intended to write about them who knows what he might have done had he lived longer or had been able to devote himself to his writing and had secretarial support. The Hobbit attached itself to the Silmarillion stories by accident and Faramir wandered into the woods of Ithilien unplanned...and as self appointed leader of the Faramir fan club, I am glad he did. What l really love about Tolkien is that the stories do seem to proceed from the world rather than the world being a superficial backdrop to the story- like a photographer's prop opposed to a genuine landscape. With landscape no matter how far you go there are always new vistas.