It may be a little late for this, but this only requires a small bit of work per major city. In 4.0, I think it would make sense to give the children an education. This would provide friend-making for the children, and would provide interesting school-like roleplay for both adults working at the school and the children attending. Also, most children (The majority of them being orphaned) are simply wandering the streets, having only the simple small talk here or there with the people, but schools provide a large variety for child characters.
Now onto orphanages. I remember in Anthos there was an orphanage near the late Cloud Temple. And as an orphaned child character, I was delighted to see this. There was nearly always someone, if it be a kid, or one of the workers. People were adopting kids, it was great. I really enjoyed playing as a character in this orphanage, it provided some really fun roleplay. Then, over the next few weeks, for whatever reason people decided to attack the orphanage all the time, and it was eventually relocated to a really weird location and everyone kinda left. I propose that there should be an orphanage right near the spawn and schools in capital cities.
Let me know what you think in the comments below!
Thanks.