The game got so many qualites but... somethings missing.
But after some time i realized that Oblivion isn't that much better than Morrowind. The graphics are stunning, the fighting and the sneak system is really good and the sound, voice acting and music is the best i've ever heard in a game.
But somethings missing. Many of the good and funny spells like levitate are not in the game anymore, there are too few factions to join and the requirement system in the factions is gone so if you are a fighter it is still possible to be arch-mage with only skill lv 5 in all magic skills. The faction missions is too short, and something a little boring and there is too few missions to do for your faction.
The AI is not really impressing either. I saw a hunter in Chorrol but he is just standing under the Great Oak. No hunting, no nothing. Just plain talk.
But it is no secret that the game i really, really great and i love it. It have some bugs and i'ts a little too short. You can clear the main quest in just 20 hours and that's not impressive.
But still in the end it is a good game with many features and many mods which can keep you playing.