Some issues still need to be worked out, such as whether Brazil will automatically qualify as host, and how qualification for the Great Britain team will work. This format also favors nations that don't live in the strongest regions. For example, Argentina should have no difficulty coming out of South American while Kenya will be the favorites from Africa if South Africa finish in the top four on the Series. The region that could potentially be hurt the most is Oceania. If only two of the nations finish in the top four on the Series then one of New Zealand, Australia, Fiji, or Samoa will have to go through the repechage.
For the U.S. this format potentially makes things a bit easier as they only have to contend with Canada and do not have to worry about Argentina. Canada has had the upper hand in the meetings between the two teams over the last year plus but the results have been close. Sevens is a tight game and in a final match anything can happen.
What do you think of the format? Can the U.S. qualify?