Well, as this topic is 18 pages by now, so probably most of my ideas have already been mentioned before (I read some posts but couldn't read all). So, I'm going to make it just short points.
-Piano , Violin , more music stuff.
-More clothes for pregnant females, and let it be specific ONLY for pregnant females.
-Toddlers interacting with each other.
-And if they can interact then be able to invite other toddlers over
, they can be brought by their mothers or babysitters,and they can come to take them back by the end of the day.
-Clothes getting dirty!
-Sims WALKING together , I know they can ride a car or cap together but I want them to WALK together, maybe holding each others hands if they are a married or dating couple , or a mother holding her child's hand while walking. If they are just friends or brothers.... they can put an arm on the other's shoulder or just walk side by side.
-Visiting the hospital to know the gender of the baby before birth.
-Getting sick, needing to see a doctor or to take a medicine
-More parents' interactions with babies & toddlers, and more stuff for the Baby/Toddler.
-Weather changes, or seasons.