I would like an update for museums to make them more fun. Museum is such an umbrella term, it would be great to build aquariums, children's museums, art installations, a selfie museum. Better collection options to make a history museum. Simply more ways to interact and have fun.
I totally agree with the fairground, I keep finding new ways to suggest bringing back the seasons festivals... I really miss them.
More food options would be great.
Some of your suggestions are avaliable with DLC. I rarely keep the EA builds but my save is full of places to go. My sims never stay home.
Great ideas.