I've been replaying bits of Redguard again while waiting on any real TES VI news. The 1998 game and the books that followed still feel like the strongest base if Bethesda actually goes there.
The Pocket Guide to the Empire, 3rd Edition has the clearest summary of the province after the Warp in the West. Sentinel, Hegathe, and the Crown-Forebear split all get named without much later contradiction. If TES VI really is Hammerfell, those factions already give the writers two playable power structures that don't need inventing from scratch.
Yokudan history shows up mostly in the "Redguard" manual and the in-game book "The Arrival of the Yokudans." The exodus date is pinned to the 1st century of the 1st Era, and the old sword-singers get mentioned as a vanished order. Nothing in Skyrim or ESO has overwritten that timeline, so any new story could reference it directly without retcons.
The big empty space is how the Thalmor presence or the Dominion's reach would actually play out on the ground. The 4th Edition Pocket Guide only says Hammerfell fought the Dominion to a standstill. That's useful but thin. I'd like to see whether the game treats the southern coast as still independent or quietly contested.
For anyone new here, the standing TES VI thread collects the official scraps we actually have:
https://elderscrollsforum.org/vi/p/1-tes6-everything-we-know
If you're just dropping in, the intro thread is still the easiest way to get oriented:
https://elderscrollsforum.org/vi/d/101-introduce-yourself
The wait has been long enough that most of us treat every new rumor as background noise until something official lands. Still, the existing Redguard and Yokudan sources already do more setup work than Skyrim had before its release.
So how heavily do you want the old Crown and Forebear divide to feature in a new game, or would you rather see fresh conflicts take center stage? And does the lack of a clear date for the sword-singers' disappearance bother you, or is that the kind of gap that makes for good quest material?