Although it has long been clear that those who are able to travel will be the ones playing. There is no point in having any additional selections. If a person can travel to the finals, why limit them?
In my opinion, the optimal format would be 16 people and 4 rounds. Without tourists and inactive players, only strong regulars. Different numbers of quotas for different qualifiers (based on the strength of the team and the number of people who want to participate). So that there is competition in each qualifier.