wasnt skyrim designed so it can run mods on the console versions
DLC is basically huge mods at least on PC, I assume they are the same on console, first main game is loaded, then the mods are loaded and they add or change the game, last the savegame who actually is almost an mod itself.
You would need an program who downloaded and installed mods, it also had to have options to disable and delete mods.
None of this is very hard.
main issue with random mods is that they are designed for pc and might be to demanding for consoles, not only models who add lots of new armor with high resolution textures but also things like huge dungeons with lots of enemies.