definitely want anything that expands on family game play and how people get along/ are attracted to each other. You can pretty much marry anyone as long as you flirt with them long enough. Also anything with more boy child/toddler clothes would be great. Girls get all the cute stuff. Would also love to see more paranormal stuff built in - or best would be to allow toddlers/children access at least some of their occult powers.
I don't love vacationing because I am always trying to manage large families and get them to certain skill points and I feel like going on vacation takes away from valuable "study time". I've tried taking the family camping but you end of leaving 7 of them to fend for themselves (which they are terrible at), while one sim wanders around in the woods looking for berries.