Alright! For gamepacks I'd like...
1. A Renaissance Fair - Could be a destination world, could not be, but it should have a lot of off the grid options for everyday stuff and two or three new skills sims can continue back home (archery, metal work, fencing, etc). Would also love to have a contest to become king/queen for the day and perhaps even a little story our sims can follow, kind of like StrangerVille.
2. Super Sims - I'd like super sims to be their own occult, maybe call them mutants or something, with a superhero/supervillain active career set in a new city world. They should have their own tree with super abilities or perks they can unlock as they progress. I'd love if they'd add a new fighting skill here too, kind of like marshal arts in Sims 3, where your sims gets better and are more likely to win as they level up.
3. Romance - Set in a romantic city (Venice, Paris, etc.), this pack would focus on dating and romantic activities. It should include new romantic interactions like bed cuddling and kisses, as well as a dating app sims can use to find their One and Only or just casually date around. I'd like the app to be pretty detailed, allowing us to narrow down by age, gender, sexuality, likes/dislikes, traits, etc.
These are the gamepacks I'd love to see. Not sure if we'll ever get them, but if they're done well they'd enhance my game so much!