Started Vvardenfel today, the difference in quality between this chapter and the vanilla zones is staggering.
I think if new players traveled to any of the vanllia zones they would be disapointed after their experiences in higher quality chapter of Vvardenfel.
ZOS please look at visually updating the vanilla content, it will vastly help the game in the long run.
It will be better for the game in the long run to make each zone visually interesting and unique.
Suggestion #1: First thing I think would be best to tackle for now is to Re-design the landscape rocks. DLC zones are adorned with amazing, hand sculpted rock formations, whereas vanilla zones are stuck with simple rock meshes with tileable textures.
Vanilla Desert rocks
DLC desert Rock textures
Suggestion #2: Take what you did with Vvardenfel, accurately re-create game map, and apply that to Skyrim.
The reason Windhelm looks different in ESO, compared to TESV: Skyrim, is not because they are in different Eras.
It is because ESO was in development before Skyrim, so the version they developed came into existence before Skyrim's version did.
That being said. Skyrim's Windhelm would be more visually interesting in ESO than the current one we have.
ESO Windhelm front gate
Skyrim Windhelm front gate
The architecture seen in Skyrim clearly comes from an era when Ysgrammor was alive
Definitely take the time to tackle one zone at a time. It does not have to be done all at once.
This being said I appreciate how ZOS has continued to stick with it and have not given up on this project.
They have greatly improved things since release.