In general, it's hard to decide because most of the time I like one feature of a pack but absolutely hate another...
What is your most favourite/least favourite expansion pack, and why?
I'm gonna go with Bon Voyage as favorite, because you can live at the beach and swim in the ocean and travel, or Open for Business because of the endless possibilites for stores.
Least favorite would be University, Apartment Life or Freetime. The first two because I never play in dorms/apartments, the last one because except the cool new hobbies, it doesn't add much to the game play for me and I don't care about the hobby enthusiasm.
What is your most favourite/least favourite stuff pack, and why?
Fave is probably Happy Holiday Stuff because I love christmas, or Mansion&Garden because it adds more realism (heater and stuff). Oh, and H&M because more stuff for your stores!
Least favorite is Family Fun, 'cause I don't like the furniture.
If you could rank how much you like each expansion or stuff pack in order, what would your order be?
Oh god. I guess...
Open for Business
Stuff packs is too hard to decide.
If you had to remove an expansion, which one would it be, and why?
I would remove Apartment Life or University. I wouldn't miss apartments or universities, 'cause I never play them. But there are some objects and small features I really like...