I love toddlers and Vamps - great job on them.
I love how easy it is for my Sims to make friends,
I love how much faster they seem to learn things once i get them going.
I love how easy and fast it is to build homes now - and make decent looking Sims a lot easier.
Love being able to pre-plan 5 outfit in each category as often as i feel like doing so and the Sims often change themselves properly.
The more I do things with my sims the more they have a tendency to go do some things by themselves instead of me telling them constantly. My sims will take it upon themselves to exercise after dinner - most days without being told - sometimes goes water the garden areas that are dry with out being told and even read more on a skill book I started them on without being told. Many of these things I usedto have to tell them over and over in previous games - they do on their own once they get told a few times.
My artist sims will always paint on her own at least one or two painting a day - I like that self motivation.
Those are just some of the things I really like about Sims 4 sims in my game and they do it all with out using mods or any cheats which I love.