Did you ever get a response? I've tried drop-podding and caravaning to a trade fair three times now.
The first time, I dropped at the center and everyone was immediately hostile. I'm assuming it is because I dropped on a NPC, but now everytime I re-attempt, the game tries to generate the map, then goes to a blank screen and the trade fair is gone.
If you are drop-podding in, the drop pods are stuck on the world map (I'm guessing because the target dissapeared) and you have to reload the save.

I am guessing there was never any resolution on the casket behavior?

My pawns seem perfectly happy to load every casket (modded or not) with animal corpses, but for the life of me I can not get them to put a human(like) corpse one in.