@TadOlson is that really a discovery though if it's a mod and not something the game does automatically? Mods add so many features to the game that may or may not have been there before.
I also don't know why you'd want to bring your toddler to the community lot unless there was things for them to do :D it'd be like bringing an infant and just leaving it on the sidewalk.
I discovered last night that your sims wave at their pets like they do other sims. Correct me if I'm wrong but I don't think they do that in ts3.