First part is to fix up and unify AI problems with Get Famous (fame reactions), Get Together (club motives), and the stuff I've also heard about Community Action Plans in Eco Lifestyle as it seems like these packs were given AI modifiers that don't play well with the AI and can cause problems.
Give the Traits in CAS more influence over Sim behavior.
Give the Sims long term objectives: If you want your Sim to buff up fitness you would be able to set them to work on equipment so long as their needs are met and be able to toggle if you want them to quit for work/school or not.
Give them short term objectives: If an interaction fails instead of removing it from the action cue it will try again 5 seconds later.
Give Sims favorite objects, foods, activities, interactions, and people. Which the player can define or the AI can learn themselves and goes into a long term memory.
Fix the problem with Sims leaving stuff they remove from inventory behind!
Sometimes stuff gets stuck in the action cue like canceling a project on the robotics work bench. Fix it!
Set priority on work/school and fix the problem with Sims sometimes not leaving for work/school
Fix/Adjust "obsession behavior" like when Sims are dancing it is hard to knock them out of their dance activity and interact with them.
