I did not see this mentioned: a very hard part of organizing events for remote teams is dealing with visas, for example, choosing to host an event in Europe will often prevent someone from India attending. Do you handle that, finding a location that is suitable for the largest number of the team?

Another challenge is travel, e.g: scheduling an event in Europe for a distributed team of U.S. people during bad weather leads to people stranded at airports, missing the event.

I think this is a great idea, but I am surprised to learn that organizers are spending most of their time communicating with hundreds of venues. Once you have a location and budget, finding a venue is straightforward.