If CA goes to a district model, I know of one regional for sure that will be able to handle many of the international teams that attend CA Regionals.

Many of the CA teams that attend our regional would likely not continue to do so, leaving many new spots open to join the numerous international teams we already serve. International flights to Las Vegas are in many cases less costly that those to California and other regions across the country and reasonably priced hotels are in abundance here.
Other Regionals that serve smaller/distant/low density FRC populations will likely be relied upon to also serve a growing international community as well...at least for the years to come. Our friends in China have formally submitted a bid for a Regional there next year and await a decision by FIRST HQ. Special thanks to 525 for getting things started with CUYRA there almost 3 years ago

Teams like 3132, 4613 and other Australian teams have done a great job helping to establish an event there that serves that region of the globe and Israel has established a strong event. Expect more of these success stories as time goes on. As I have said before, I think FIRST realizes an assortment of event models will be needed to serve the mission of FIRST
and FIRST FRC resulting in a combination of Districts and Regionals around the globe.
Edit: Mia culpa...I forgot to mention the important role the Mexico Regional serves as well.
