They really need more candidates from other races other than humans as well as maybe add more things you can do with your spouse, maybe the ability change their outfits, divorce, and remarriage.

The way i see it it will be either improved a bit or completely removed from the next game.

It should definately be improved in TES VI if it includes marriage.

I'm kinda for removing it since I don't see it's usefulness even from a rp-point of view.