I'm also hoping for more gameplay and many, many, bugfixes!
My fingers are crossed for an attraction system, neighborhood stories being expanded to also deal with marriages, engagements, divorces and YA's moving out and getting lives of their own, as well as an EP of some sort and perhaps a few stuff packs (I prefer those to kits). I would also love a refresh like they did to Spa Day (Dine Out!!!)
EP wise, I think it's only fair if they release something for the occult players. A magical world with room for all occults, improving those who are already in game and adding werewolves and fairies and dragons. It's nothing I would buy, but I can see that occult players have been getting very little.
If not that, I want an EP that includes a world we haven't seen in game yet, like somewhere in Africa or the Middle East. Something new that includes lots of game play options and new interactions. I would love hotels and surfing as well, but only if it works within the theme of the pack.
Another thing that I'd personally would love would be generally more cultural content from around the world - maybe lots of stuff packs with different themes including both objects, clothes, food and holiday traditions/objects or interactive objects that are typical for the region.
Those are my hopes, my beliefs? Not sure, either a GP or EP and some kits I suppose.