I've been reading in this forum topic and have seen many people looking for a Family Camping Group in AZ. The wife (ultra organized), I (mostly scatter-brained) and our 10 year old (mostly chatty) are willing to undertake the task of organizing such a group if there is sufficent interest.
All Arizonans know that we can camp 365 around here and find just the weather we are looking for. From North Rim to Mogollon Rim, Aqua Prieta to Saguara National Monument. Roosevelt Lake to the Colorado River we have it all. High country in the winter, Desert in the winter.
If you're interested, either post a message here or PM me.