It's kind of a double-edged sword, since there's also a huge amount of things that Skyrim did right, and you're most likely going to miss those going back to previous titles.
Also, Morrowind, as much as I like the game for its atmosphere, has an absolutely, absolutely terrible battle system, and I find myself unable to get enjoyment out of combat after having played Oblivion and Skyrim. Oblivion just improved the system so much it's uncanny.
But while Oblivion did great in bringing the combat up to speed, the atmosphere and art direction in turn took a massive hit. Everything is so clean and colorful and generic. Like, show me a screenshot from any of the nine cities in Skyrim, I can probably tell which one it was taken in. But do the same for any of Oblivion's cities, I couldn't tell you for the life of me. Everything looks the same. There's that once city that claims to incorporate Dunmeri, Nord, and Imperial style architecture, but you can't recognize any of it. It's especially glaring because the Dunmer have a very iconic architecture style, and none of it is present in that city. Ugh!
