Would a 6e with a new default setting (that could still support the current/legacy ones) be a benefit, or detriment?
OK, you know those... I guess giant hexes filled with terrain, locations, encounters, and stuff? They mostly seem to be published for OSR games. I am totally blanking on what they're called.
My idea would be for those things to replace a default setting.
So
my wish would be that the game would publish those. Each Giant Hex would have interesting area, adventure hooks, and new stuff made specifically for that Hex, like monsters, treasures, and things like that. Kind of like the old D&D/Known World Gazetteers and Dragon Mag's
Voyage of the Princess Ark series. Only smaller and not inherently connected.
It would be a good way to introduce regional religions, or have a particular wizard and their unique spells live there. GMs can pretty much stick them together however they want because there's no actual world map or unification. It would be more realistic because hey, a world with presumably low communication or long-distance travel
would be more likely to have areas with their own unique things. And the presence of high levels of magic could mean that yeah, you could have a temperate forest hex right next to an arctic hex. The God of Winter decided to claim that hex; you gonna tell them no? It's how the world works.
Also it would fit that whole stupid "D&D needs to be monetized more" thing WotC/Hasbro has been wanting to do, because they could each be sold separately.
And it would definitely encourage the fans to make and sell their own.
So anyway, my wish: no default setting. If the book needs to, for instance, talk about the gods, they can just go "the Deity of Winter" or "Major Port City" rather than namedrop Auril or Waterdeep.