What are you looking most forward to?

Way more traits and more trait slots per sim. And a likes/dislikes system.

But also:
Witches
Fairies
Magic
Celebrities
Bands
More careers
More worlds

And the return of missing objects from sims1-3 as well as new exciting things.

Witches ( Black Magic, Voodoo )
Fog
Body hair
Piercing
CREEPY BAYOU WORLD!!!*.*

Ability to turn off the mobile in the game.

bug fixes

While all of these sound so good, I honestly do want upgrades to what the basegame has. Everything from the previous years needs to be revamped and new free content going to accommodate it!

New worlds or vacation locations.
an island setting of some sort, be it tropical, mediterranean, southeast Asian, or caribbean, just something. Hopefully would include resorts or hotels in it. If they really expanded on this with cruise ships and houseboats I could see it being an EP, but if the main focus is the fact its an island, possibly a GP.
A mountainous world with some type of winter influence - one that such if someone doesn't have seasons the winter weather would not spill over to other worlds and would just be confined to this one location, so as not to depend on purchasing another EP. For those that want just a taste of winter, I guess.
Another big city but a touristy area - Las Vegas comes to mind. also of course other ideas would be Paris, Tokyo (even if SM is a bit like that), Miami, London, Sydney
An African world of some sort - more plains and grassland than Sahara for sure. African safaris, and free ranging (to lots) animals.
Egypt as well, for mummies and pyramids
Not sure if this would fit the idea of a "world" and certainly not a vacation world by any means, but a zombie apocalypse type world where everything is run down. Zombies would come with this world, I guess you could choose different levels of zombie count if you want to focus more on the post apocalypse type of play or more on the zombie type of play.
A Medieval type of world. No cell phones, carrier pigeons instead. I don't know how difficult it would be to do that.
Theme parks or zoos or aquariums. this would definitely work better as a vacation type of world. Though it would probably be an EP over a GP given the amount of things we'd likely get with it.
Some type of world that revolves around farming but is set with current technology. This would for sure be a residential world not just a travel destination.

And those are, for the most part, just vacation/travel spots, not even standard residential worlds. And just the ones that come to mind right away. I could probably go on for quite some time.

Sims5.

A new hint of the next Sims game :wink:

That isn't coming for at least 3 more years though.

Much as I would love a new life state, I'm really feeling the need for core fixes. I'm hoping they find a way to tweak the traits to override the current emotion triggers so that Sim responses make more sense. This should include tuning some of the happiness defaults down to "fine" so the Sims seem more normal. I also feel like we really need a fear emotion and/or some kind of intricate fear system. Finally, I think we could use a much better memory and reaction system so Sims will remember important events, hold grudges, and react to situations accordingly.

I feel that making these changes would make a huge difference in gameplay.

I'd like more gameplay systems. Like hobbies, interests, fame etc.

But there are sooo many things in this game that need tweaking, fixing and updating that I just wish they'd focus on that and patch the hell out of TS4.