Specific Wishes

1. children and teens not seen on the streets during school hours/sims not being available during their respective work hours
2. aspirations changed to lifetime wish and made harder & longer to achieve
3. getting back the burglar
4. strollers for toddlers
5. separate memories for each household/scrapbook

honorable mentions would be a overhaul of traits integrated with hobby system.

1) sims have a circadian rhythm
2) a second aspiration for each childhood skill
3) kids can garden (physical skill, actual skill unlocked with Motor 10)
4) Each household can have its own holidays.
5) more after school activities

Honorable mention: more trait slots, corollary: more negative traits.

1) Anvils for my stuck in time Sims who wants to make a living with a smithy.
2) Hunting for my far-off living in a forest cabin hermit.
3) A true immortality spell for your most powerful spellcaster.
4) More supernatural traits in the reward store (that's how I use them 9 times of 10, as developed powers for my Occult Sims).
5) Cars, trailers as placeable objects - no need to see my Sims drive with them, everything could remain at the lot), the trailer would even serve as a decorable mini-house which I then simply could move around as my Sims travels the world.

5) Waist-long female haircuts
4) Additional fitness-category aspirations (one for Spa Day GP based on wellness skill as well as additional BG aspiration) and Mermaid-specific aspiration(s)
3) Newcrest 2.0 (another empty BG world)
2) Horses
1) Body hair

1) no more kids aspirations (kids work on adult aspirations)
2) no more kids skills (kids gain adult skills)
3) ability to choose the lengh of each lifespan
4) a bunch of maxis pre-made builds coming in each pack, that we could choose from without using the gallery
5) a bunch of new aspirations

5. Dynamic world maps like the earlier games (3D)
4. A new, large base game world
3. Favorites and turn-offs in CAS (choose a Sims favorite food, color etc)
2. More CAS traits
1. Paintable Ceilings

1. Cats & Dogs need to have water AND food, instead of just drinking from puddles
2. Vampires + Spellcasters get unnerfed (vampires are returned to their original protentional and spellcasters can use magic in all worlds)
3. Mermaids get a power system similar to spellcasters and vampires + a mermaid lore skill
4. Traits have more of an impact on Sims personalities and their relationships
5. New base game world (with at least 13 lots)

Honorable mentions: more CAS traits, more pale skin tone options, hair (and eye) color sliders.

1) zodiac signs
2) favourites ie food, music, colour etc
3) simder (app/online dating)
4) pond tool
5) more relationship options in cas like in sims 3

I think all except number 3 could easily be added in patches to the basegame as all of them of have basegame features in the past. Number 3 would most likely be added in a romance pack.

Working cash register for retail with actual animations and Sims leaving with shopping bags
Body hair
CAS update for facial hair with stubble beards goatees and sideburns separated and being able to be layered
Cars
Turn ons/Turn offs

1. Body Hair for all sims
2. All types of Wings for all sims
3. Genies
4. Fairies
5. Werewolves