At the beginning, the game sets up the CW conflict by introducing the Thalmor. Raloff complains about them in the cart and you see them on horses near General Tullius as you enter Helgen. With no DLCs to resolve the game, why were the Thalmor even in the game at all? Were they even involved in the Civil War questlines? Now that I'm thinking about it, I never saw the Thalmor play a prominant role beyond the Diplomatic Immunity quest and easily-killable roving patrols.
To me, Beth's news of no more DLCs relegates the Thalmore to MacGuffin status.