A visual workspace for creating diagrams, visualizing processes with great collaboration possibilities. Also from a travelling cost point of view or busy agenda scheduling reasons, why bring all people from different locations together in one place? We have gained some very good experiences with remote workshops using Lucidchart.
But, in these times of social distancing, it is neither possible nor wanted to have a live workshop. Yes true, I think the best are live face-to-face workshops with good interaction, looking all participants in the eyes and big brown papers on the wall.