We did a Caravan to Mexico once with Baja Winters. What a hoot. Made great friends and had an Awesome time. I think Caravans can be a hoot if everyone checks their politics at the door. Wouldn't hesitate to do another caravan.
For what its worth, we are starting to organize a caravan thru Europe, Morocco, the British isles and the Baltics for fall of October 2017 lasting approximately one year. We will be buying the motorhomes in Holland and selling them one year later. Lots more details but we'll leave it there unless someone wants to PM me. At some point we'll start a separate thread. Just starting to get the word out.