You can make 3 improvements to TS4 to perfect it. What would you improve?

1. Personality traits that matter and carry weight of choice and consequence; a genius should receive lucrative bonuses to their performance in school, whereas a mean Sim should actually have difficulty building friendships while making enemies is easier
2. Gameplay-orientated development plans. No more stuff packs, and honestly for all I care they could just produce game packs from now on if the EP team is gonna perform so poorly at producing results.
3. Let's not kid ourselves, it would actually be easier to just start anew with a new game.