Hehe! ^This. You're whole post was excellent and I completely agree. I married Aela "the Huntress" in vanilla and now all she does is mope around Breezehome. I mean, come on! Get out of the house! Walk around the town! Go shopping or selling! Go hunting! Do something for crying-out-loud.
I also hope they can come up with some universal patch for followers, so they are more dynamic like Serana.

On the plus side however, Lydia and Aela spend all their time alone in that house just waiting for me and my mistress to return home.

DY-NO-MITE!
[Edit] It would also be great to marry one woman per house you own, just so long as they didn't get wind of your other wives. It would be interesting to return home to two pissed off women, arms folded, blunt objects in their hands, tapping their toe waiting to hear your explanation.