Nobleshield
Explorer
They wouldn't need a fully fleshed-out world, IMHO, just enough of a starter to let DMs flesh things out. Think what they did with Nentir Vale in 4e or the Expert set that fleshed out some stuff about Karameikos and the surrounding areas of the Known World (or the original Greyhawk, for that matter; the folio, not the boxed set, where it gave you just brief info and didn't even give classes/levels to the rulers, nor have a pantheon).I feel that a new setting is one of the most time and labor-intensive design projects there is. Having to design an entirely new world and make it a cohesive whole is not something you can just pass off casually to a bunch of other freelance writers like you can an adventure anthology. You need to create it, design it, come up with original art and artistic styles for it, figure out what is unique about it and what is standard about it. And all without any previous design work ever having been done previously that you can adapt or draw from (like you can with classic D&D or MtG settings).
All of that work merely in the hopes that people like or care about it. And also for just the one or two singular products they invariably produce for it-- a setting book and maybe an adventure. To me... there is just not enough bang for the buck. Sure they could do it... but why would they? Far easier to just adapt another MtG setting where the world-building and tons of art assets have already been made. And for a whole heap of the player base might as well be a completely new setting.
Give a solid starting point, with advice and suggestions for DMs to take that and make it their own, rather than follow the Forgotten Realms style of having everything mapped out. I find it quite telling that as far as I can see the 5.5e DMG has little or no advice on actually building a campaign, while the 5e (2014) one talks about it at length.







