I hope I'm not too off topic for asking this, but did you play Sims 2? Toddlers used to do ask for stuff, steal bottles from other toddlers, be able to be bathed, sneak out of the crib and splash through toilets and puddles. Naturally, being that Sims 3 is supposed to be an upgrade, with the open neighborhood, and what not, I expected those things for toddlers.
It's too late now to give the babies feet and legs, but I think that toddlers (especially evil ones), could get the option by clicking on another toddler, *Steal Bottle* or perhaps, they can upgrade to sippy cups. The hugging options from Apartment life could gear mainly toward good and friendly toddlers, while the brave, evil and insane can climb up on furniture.
Again, sorry for those begging points, but I think toddlers deserve some of those interactions for TS3, perhaps even more upgraded. I think they'll do it, while we're still in the middle of TS3, but maybe during a base patch.
EDIT: I'd like childhood crushes please.
EDIT 2: A Charlie Sheen endorsement pretty please!