I said variety, but in fact I expect both variety and depth if I'm paying the price of an entire game for an expansion pack. I could buy games for my switch for that price or less. I've backed games on kickstarter and backerkit for around that much. And that comes with the entire game, extras, and updates / early versions.
So if I'm paying 40 bucks& you're making content limited time to convince people to pay full price, it needs to be worth it. And usually it falls short in certain areas.
Like expansion packs feel like game packs with a slightly bigger theme, that always, ALWAYS include a core function that was desperately wanted by somebody in the game. Usually delivered just shy of how you wanted it, slightly off, or a functionality that greatly benefits basegame and should've been there all along. But they don't flesh out every part like they should.
Game packs end up more fleshed out. Like ignoring the first few dlc packs, these patterns quickly emerged. Just look at mermaids. Like when we got aliens no one had any reference for occults in sims 4. Then we got vampires. And Spellcasters and Mermaids. And it was easy to see that it wasn't just bc GTW was the 1st expansion pack.
So yeah variety is important. If you're paying the cost of a big new game, it needs to give content like you're literally adding an entirely new game's worth of content into it. Same with game packs, they're the price of cheaper indie, casual, and less intensive games. Ones you can finish in a few days, or play with friends that don't have an end. So give depth and content worthy of that.
Simmers shell out hundreds upon hundreds of dollars in dlc, upgrading their pcs, etc, it needs to be worth it.