I disagree... I would like toddlers to be younger, I don't like how independent they are in TS4. I want them to start out crawling because it was so cute that you could teach them to walk. I also want them to sleep in cribs rather than beds because it's sooo much cuter and makes it feel more like they're dependent on their parents. Except for those things, I like TS4 toddlers.
Oh, and I want them to drink from bottles instead of sippy cups, like in TS2 and 3. Again... I don't like that they're older and more independent. In TS4 it seems like they aged everyone up. Toddlers, children, teens... are all older. Teens are basically young adults who go to high schools, kids are like 10-12 instead of the 8-9 in TS2 and 3. Toddlers are like 3-4 instead of 2-3. I don't like it. I just... don't. I'll never like it, and it bugs me each time I play with my families (because I'm a family player) that the toddlers are so independent. There's only so much play-pretend I can have with myself by giving them cribs and locking the movement skill so they don't start running or climbing stairs...
I have a CC crib for toddlers but obviously it doesn't have animations and doesn't actually work... It's just a normal bed that has bars that they can just move through. Still, it provides some consolation for the fact that we don't have cribs...