Just FYI, Skyrim is on a brand new engine.
The new engine is pretty much just a more or less upgraded Gamebryo. Would be much better if they made a completely new one.
I bet you never tried the oblivion mods that changed the AI to allow that.
It's quite funny that we have to mod a game inorder to make it decent.
No, that would be Obsidian Entertainment, here's a list of their track record:
KOTOR 2 - Unfinished and buggy.
NWN2 - Extremely buggy. Pretty much killed the game on release.
Alpha Protocol - Bugs galore! Was also pretty much killed the game on release.
Fallout New Vegas - have I mentioned buggy?
Granted patches have fixed most of the games, and a modding community KOTOR2, but still I think they have had a far worse track record for buggy games!
Yeah Obsidian are quite funny. They always make games on other people engines, which ends up being bugged.
But usually their games are overall quite good when they are patched. i.e Neverwinter nights 2 and especially Mask of the betrayer were quite glorious.