Cyrodil should have been a jungle but instead we got something fairly european (keeping the lions though.. bit dumb) As for the shivering isle.. THAT WAS GENERIC! It's the realm of MADNESS yet i can easily comprehend everything going on. Nothing of the land seemed to defy the forces of physics and the difference between mania and dementia was some textures. The knights of order realy changed little in dementia! I expected sheogorath's house to be something like that crazy staircase picture. It was to much for a mundus country and too little for a realm of crazy.
Skyrim is just so generic! There was nothing otherworldly in it! The only unique(ish) creatures were the icewraith and the charus and they aren't even special! Other than the pretty skies of the game the landscape was just dull! The reach is more green, the rift is more orange but other than that everything is either brown or white! Most of the armours just looked.. wrong and dungeons had little to none in personality! The only places i felt that were inspired were when you first find the eye of magnus, One or two unique places in daedric quests and the portal in the main quest!
i realy feel as if the next tes should avoid a generic country like high rock or skyrim and be CREATIVE. Bethesda butchered cyrodil's "jungle" but id realy like to see cities inside migratory trees in valenwood or the surrounded by twisted trees of black marsh. Maybe some more morrowind-esq dwemer ruins protruding from the sands of hammerfell or marvelous palaces in an elsywere more vivid than khajit discription!