Playgroups for older kids

My son is in a playgroup that has been together since most of them were infants. Many playgroups fizzle when kids get older so we're going to mix it up a bit and hopefully keep that from happening. Once a month we are doing family playgroup for the 5-6 families in the evening. We are inviting the daddies to join us and everyone will bring a dish to share. By adding this new family social component to our playgroups, I am confident that not only will our children continue to cement their bonds with each other, but the families will also grow in their friendship. Wouldn't it be great if we still had a social life after our kids are in high school????