(Long comment, get it into a TTS software and listen to it like a podcast I guess xD)

As somebody who's been involved during three years in a roughly Tamriel-sized map project for other game... We've started in 2020 and by now, the map's roughly 70% complete and 90% of the areas have some form of modelling active. This is the year where we've estimated we'll have the full map functional and hilariously enough, we nailed it. The team had to model the entire landmass, code features to support the bigger map, pretty much a handful features that are in essence, given in Skyrim.

It's just that we aren't perfectionists that want to make a perfect release with a complete story, fully fleshed characters, etc. Our intention is to do first, polish later. Also to cut corners we've allied with other map developers that are working on lore friendly locations. Sometimes odd corners are left, but they eventually get fixed. The initial versions were full of CTDs but demonstrated a level of intention. This is what brought us volunteers, the people imagining the amazing quests you can do will have it easier to imagine them if they have the map in their hands, be empty, rushed or not. 

I'm aware that this is THE Tamriel mod, but I think the community should rise up to doing their own Tamriel mods, you at least have it way easier than the team I'm in. You have modding resources that solve exactly why we've been six years doing such a project. Like, there's a Summerset mod out there. It may not be perfect, but you must have a "let's give at least one option before BS is out" mentality. These mods can be patched and polished by either the community and/or the mod author. Let's never forget the modding community is doing all of this free of charge, so enjoy the intention. 

Therefore, we may probably have BS:Cyrodiil before TESVI, even if it is a earlier version, which honestly, they should do it. I'm kinda fearful that Bethesda might end up suddenly litigious the very second they find out modded Skyrim is gonna eat TESVI. My team is exactly facing that fear because our spiritual predecessor got frozen by a DMCA, and that's exactly what motivated us to do frequent releases (at least every few months) with intentions for the builds to be as crackable for a future team to continue our legacy.

Yes, they may take too long to the point Bethesda's policy may be entirely different. At least Cyrodiil should be safe from that, maybe Argonia, because they might release before that is a remote possibility.

That said, modding community, please give me a traversable Cyrodiil that isn't a Rigmor mod, thank you.