All you need to is connect the Skyrim game with the Nexus!!! It would be SIMPLE!!!!
No, it wouldn't be simple at all. Microsoft wouldn't allow using a third-party website, not to mention that there are plenty of mods that raise the requirements quite a bit, and suddenly the game would crash or even not able to start.
Now I'm not well informed on the issue, but I'd imagine Minecraft mods would be quite small and insignificant compared to some of the Skyrim mods.
Very true, Minecraft doesn't take up much data, it's a relatively lightweight piece of software compared to the blockbuster games released.
In any case, if you want to play with mods, buy the PC version. That was true for Morrowind and Oblivion, and is true for Skyrim too.