Whims are a staple of The Sims and it's a huge letdown to hear that they haven't even had it on the agenda. This far into the game and it just feels like some of the most important game features, those that have been in the series since the first or second game, have been consistently ignored and thrown to the wayside for more superficial "marketable" content.
Whims/Wants are a way for the Sim and player to connect. They state directly what a Sim prefers to do or buy or like or explore. I think it's one of those overlooked but important pieces that puts things in proper perspective. (That was a tongue twister, haha.) Whims/Wants give the player direct information about the Sim while still clarifying that control is in that player's hands to allow the Sim to fulfill those wants or ignore them. The same was true of Fears (which we also really need to return). With all of the hullaballoo about consent going around, I think it's vital that the game plays in a way that makes it quite clear who is actually pulling the strings and allowing or disallowing events and interactions. Whims contribute to that.
I'll add on that the animations for breaking the 4th wall were also part of that as well and it's a huge bummer that they stopped putting that in when Sims 3 came about. When the Sim looks up at the player and acknowledges, with appropriate response, that the player is directing them to do things that they like/don't like, it cements the question of where consent comes from and acknowledges the player in a sort of "God" position of power.
These. Things. Matter.