This suggestion will either require devs to learn game design 101 (or just look up examples of Wishes/Wants from previous game) and learn to somewhat resolve the issue whatever technical thing prevents them to include not-superficial whims. I'm really confused as to why they don't attempt to take in previous games as reference and observe/learn the thing that made it interesting in the gameplay. It's more baffling when one of these developers have worked for developing previous game(s) as well, yet feels like their ideas/reference are being put down or they themselves don't share it.
Personality revamp is a demanded thing, and when some of it is served - it makes the pack (Parenthood/Vampires/Get Famous) that offer it get well received by the fanbase. It's a clear indication it's working and gives TS4 a praise for those additions, so why Maxis hesitate to incorporate more of it into the game?