The Masters of the Masters

The World Tour  Finals are essentially the World Championships of tennis then why do they stay in the same spot for so long when other olympic sports have a different host for each staging of the championships  They are called the Master Series in which you can gain the most points on the tour outside of the Slams therefore why not have them rotate through these five  venues that could host the event in November for the event that used to be called the Masters. Another option is to take them somewhere that doesn't have a Masters event such as South America. Having the event rotate between venues would make it more of an event because it won't be there for another six years. These five locations all play differently and two of them have the option of the roof while Paris is an indoor venue. The order I would but them in would be Indian Wells, Madrid (which would be on clay) , Miami, Shanghai, Paris. With Madrid on clay you get the variety of surfaces which would make it a more interesting stop in the rotation of the Finals. Of the nine thousand points available to the winners of the Masters events six thousand of the are come from purely outdoor events. So why should the biggest Masters event be where the least amount of points are given. Another venue could be the Olympic tennis stadium in Rio after it is used for the Olympics.