I prefer it to last a long time, so that the scores obtained by facing the ZHG Locations of this tournament can be combined with the scores of other events that follow one another over 13 days.
In addition, it could happen to lose a few days at the beginning of the tournament, to be able to form the complete team (consisting of 4 members) ...
Moreover one of the team members may have difficulty keeping up with the other teammates, falling behind in the execution of his part of the work (so, if the tournament ended too quickly, the other 3 members would also pay the consequences).
However I agree with you that if a group of players is not interested in spreading and sharing scores on other tournaments as well (over a 13 day period), but would rather complete all Areas right away, then they must be able to do it! (in fact, a user may have a commitment in real life and therefore prefers to complete all his part of the work immediately).