The difficulty fix is great, but what about the rest?
-The world should know you killed Molag Bal.
-You should not be helping other factions.
There should be a different questing design. You should not be doing the same quests as if you reroll in that area, but just with more difficulty. Dolmens and daedras should disappear or at least appear in a different way. The whole map desing should change. Where there we dolmens, now should appear destroyed dolmens. Molag Bals influence should be eradicated. And more things…
In short: the “alternate reality” lazy invention should not exist