I honestly don't know if I would have bothered playing Oblivion all the way threw if it had never had the duplication gltich. It made it so much more fun and some of the quests possible, that without the dup glitch I would have never ever done those god awful annoying quests, like the one where you have to get 100 tongs, 500 hammers etc... whatever. When I play a game I like to do every single quest side quest etc..but there are a lot of games I haven't even bothered with or finished because of some of the annoying repetitive quests. The dup gltich sure did make Oblivion more fun and allowed me to play the game the way I really wanted to.
Also it was really nice since us console players can't mod like the pc fellows, and I think the dup gltich was a big secret nod from Todd to us console gamers.
You think we might get a beneficial mod...er..uh...I mean "glitch" for Skyrim for consoles? I really really hope so. They can always say there gonna patch it to make the companies and publishers happy but not really fix it and just leave it in like they did with Oblivion