Another idea I have had would be a Stuff Pack guide. Simply put, it would be a guide that shows the new items in a stuff pack, lists their stats and stuff, so with a full list, people can decide if its worth shelling out the $20 bucks for. I'm kind of regretting getting Outdoor Living myself because though the items are cool, there just aren't that many of them.
So yeah, additions for each stuff pack that show the new clothes, hair styles, and build/buy items would be good. It's certainly easier to do than one for each expansion pack.