What's funny about your statement is that you obviously haven't played Oblivion with mods so those "lines of code" you demand would be meaningless to you.
Baseless accusation, of course I've played Oblivion with mods. Nothing In my post indicated anything to do with my past TES history. Much like your accusation above, this statement has no evidence or merit.
More to the point would be links to the specific mods on the Nexus but I'm not going to go through the trouble to justify myself to you.
So, make silly accusations of plagiarism, and provide no evidence? However, you have no obligation to justify yourself, I'm in no position (and have no desire) to force you.
What's most amusing here is that the Skyrim implementation of these game mechanics is really no better than the Oblivion mods themselves. The difference is that the modders created things that the game wasn't designed to handle and mostly, these mods work very well. Beth had a clean canvas, a huge budget, and six years to work and yet they didn't implement the features any better than the modders had back in Oblivion.
Definitely agree with you there though. The experiences of the new mechanics like marriage, cooking and smithing do feel rather hollow. Sure, you can do it all, but why? There's no incentive, no real rewards. And since this is a DLC topic, perhaps in the future they can expand on these features (along with some bigger, more far-reaching content). Make proper professions out the existing activities, like opening up a smithy, apprenticeships, and whatnot.
I really want to be able to fish, get a job at one the fisheries or something. Even if it's just a fun diversion.