New leads lead to new llama mechanics

With the new game drop with happy ghasts, a change to leads has been added. In my opinion these new lead mechanics can be the solution to the llama caravan problem of not being able to add or remove llamas from a caravan. The new leads lets you connect mobs together by shift clicking. There is even a visual indicator of which mobs are connected, and therefore can also be used to see what llamas are in which caravan.