Journey to Batuu...
Ready for an unpopular opinion that no one asked for? Journey to Batuu didn't deserve all the hate that it got/still gets (plz don't hate me, hear me out).
Was it a money grab? Yes, that part is obvious.
Was it what the community asked for? No, not really.
Did it make up for the fact that we don't have basegame cars, apartments, special elder sims actions, etc? No, of course not!
BUT, it has enhanced my gameplay with the Astronaut Career in the Base Game as well as my gameplay with aliens in Get to Work. Now, my astronauts can have a relatively "active" career, traveling back and forth between Sixam and Batuu. It may not be a pack I can use all the time, but many gameplay packs like Batuu (Vampires, Werewolves, Strangerville, Get Famous, Withces, etc) are also limited in face-value gameplay. What you do with them afterwards is up to you.
Honestly, in my opinion, the only released pack that is actually horrible is My Wedding Stories (since it doesn't really work).