Drama in a story is driven by conflicts and challenges faced by the protagonist, where what happens is often very different then what they expect.
But anyways...
....
I would be pleased as punch to see a real embrace of 2e's style of lore and real in-depth presentation of flavor rather than the 3e/4e favoring of rules content.
Its a divisive issue, even (especially?) back then.
1E had flavor. It was parsimonious...but it was there. The 2E core books where relatively dry and style free. So where 3E and 4E, which also took a smaller, flatter, less inspiring approach in general. (here is your little vale and your few little gods). 2E and 4E did have good monster books, in each case a redo of the first take. And yes, for 2E, the supplements were often accompanied with voluminous "flavor" that tended to be of mixed quality and was greeted in a mixed fashion.
Skipping right to 5E, they split the difference. They go pretty far with flavor and world elements, and of course the DMG goes far in telling you how to do your own. Its more then 1E, though not that out of step with it, and more then 2E core rules.
Keeping in mind that--just as unexpected challenges are key to story--verbiage and loquaciousness are often the enemies of good writing. I think they have struck the right balance with 5E so far.
But if people want some supplements full of story on certain settings, sure, why not. No one says I have to buy them.