I think this would be really popular. I'm not someone who pushed for it but I'd also take it as well. I end up playing with a lot of families and a lot of babies even though family play is a means to an end for me. I want the kid(s) to grow up eventually and then I play with YAs when they are older. Especially now, most of my sims are born in the game.
I'd like the option to keep them chilling out in the bassinet but some of my more "family play" oriented households would make use of this. Like pets and toddlers, it would be cute. Babies seem like an ideal subject for an SP in my opinion. I'd still probably keep them as babies for 3-4 days but it would be nice to have more options to do with them.
