I have the xbox 360 version, and I plan to get and install ALL the plugins... Even if I don't use them all in one given game.
I just want the maximum capable custom experience.
Let me assure you, the ones that add dwellings (with the exception of Knights of the Nine, which adds a lot more) for your player don't add to the experience, they detract from it.
"Oh, hey, a bunch of relatives of yours have passed away and left you a bunch of awesome homes."
Me: "Oh, cool. Well, my immersion is pretty much shot. Also, what ever happened to EARNING things in an RPG?"
I would, however, recommend Knights of the Nine and Spell Tomes.