Saint's Row 2 is a fantastic game, but back on topic I go. Er. Off topic actually...
Quick Travel is fine if used sparingly. But it can make the game boring, and it removes the sense of scale. Try to play Morrowind without cheats or mods, when you have no cash, and see how scary it is to have to cross a vast amount of land on foot.
Quick Travel, like the Internet, makes the world feel smaller.
I have about zero interest in Oblivion after learning all of that Radiant AI I read about is gone. It's now a prettier Morrowind with a less awesome setting, to me. But if you enjoy it, more power to you!
On voice acting, I prefer text sandboxy, open games like TES, simply because you can imagine the voice and you avoid nasty, ugly problems like that.
I own Fallout 3, however, on the 360, and enjoy it. Why? The setting is better, in my opinion, and I had never heard about anything like Radiant AI for the thing. I got exactly what I had anticipated.
The game being set in Cyrodiil was an outright lie. (it was set in generic medieval fantasy land instead)
I know things changed since Arena and Daggerfall, but wasn't Cyrodiil supposed to be like a jungle? I can't recall, because Cyrodiil was largely inaccessible in Arena and I never managed to get Daggerfall working properly.