here is a fabulous expansion pack ideas;
University/College Life
Live in dorms, explore new careers, study groups
labs, placement test, exams, school lunches,
Degree fields; ideas
science- biology, astrobiology (aliens life), neuroscience, robotics
art- sculpting, metalworking, pottery, sewing, graffiti
fine arts- choir class, drama (acting), modeling, new instruments; harp, flute, saxophone, drums
Business- accounting, business owning, advertising/marketing,
culinary-chefs, restaurant owners, fast food
Education- teachers, principles, psychology
New jobs/careers;
Biologist, astrobiologist (Sixam), neuroscience (brain surgeon)
new objects; pottery wheel, soldering table, sculpting blocks, sewing machine
harp, drums, saxophone, flute, laptops, mp3 players,
caged pets for science experiments, school projects for college students
new lots; dorms, scrapyards, food trucks(greasy food), fast food restaurants,
new traits; nerd, eclectic, stubborn. introvert, class clown, troublemaker, health-nut,
new fashion trends; LED clothing, sci-fi inspired, emo, gothic, geometric
Other packs I'd like to see are a futuristic pack with robots, space flight, synthetic food, 3d printers, robotic machines/artificial intelligence, solar power, driver-less transportation, and of course Season would be amazing if it could be more realistic to its environment (neighborhood) disasters could be random ( tornadoes, floods,severe storms etc)
I also wouldn't mind getting spiral/split-level...right now you can't do anything with those damn stairs. this isn't a complicated thing...Sims 2 and 3 had these...you can even patch them in.
Alright have fun developing....