Generic Lots - What are they?

Yeah, most lots will spawn visitors or families, based on the objects in that lot, however, you put the toddler stuff out the toddlers do not spawn with there other family members so it makes the play date event impossible to start if your sims know no toddlers, but plenty of Toddlers in not in this world. Also i wish they had a special phone or option like they did in the Sims 3 that listed sims from not in this world we could call. Also another problem I have is any sim that is spawned with the new expansion pack will be put in not in this world, I wish they had 3 more tabs one for Out Door Retreat, not in this world sims, Jungle Adventure, Not in this world Sims, that way you could tell where each sim was from.