Aldarc
Legend
Personally, I think the big issue of doing a full Forgotten Realms Campaign Setting is that Faerun is really just too big.
@DEFCON 1 is right. He's not even talking about Forgotten Realms in full, but just Faerûn, which is huge.Blah blah blah. Read the OP.and again I will ask... why do people keep assuming an FR book means covering everything like Kara Tur and Al Qadim or going into insane detail?
Greyhawk books don’t cover the rest of the planet outside of the Flanaess. Eberron doesn’t go into much detail on the other continents outside of Khorvaire.
Khorvaire is comparatively small. There are about 17 nations and territories in total: Aundair, Thrane, Breland, Karrnath, Cyre/Mournland, Zilargo, the Eldeen Reaches, Demon Wastes, Shadow Marches, Droaam, Darguun, the Talenta Plains, Valenar, Q'Barra, the Mror Holds, the Lhazaar Principalities, and maybe include the Aerenal subcontinent for good measure.
Compare that to the Forgotten Realms even just inside of Faerûn: the Sword Coast (treating this as a blob), Moonshae Isles, Silver Marches, Amn, Tethyr, Calimshan, Lantan, Dalelands, Dragon Coast, Cormyr, Sembia, Aglarond, Chult, Thindol, Samarach, Tashalar, Halruaa, Dambrath, Luiren, the Shining Lands, the Border Kingdoms, the Shaar, Ice Wind Dales, Thay, Rashemen, Thesk, Unther, Tymanther, Mulhorand, and I am no where close to done, and we already have 27 or so. Faerûn is HUGE.
I would also point out that while past FR campaign setting books may have been done in 320 pages, that's 320 pages of mostly small print text with little art. Current book layout design favors less tiny text and more giant spreads of art meant to evoke the setting. Take that same 320 page FR book from 1e and 2e and turn that into a 5e book, and you are possibly looking at 450+ pages.