Baseball is anexample of rules and changes. Wood only bats harder balls are 2 examples pitchers must face 3 batters in relief. Tennis seems to be s slave to its corporate companions. I do not know if there is any thing that can be done about that. I do believe that players use superior equipment have superior training techniques and in some countries are attracting superior athletes. I feel that most fans are not necessarily players. 5 set matches with no breakers in set 5 are stupid. One of the things that made tennis fan friendly in the 70s were the introduction of tiebreakers and the allowing of pros to play the circuit. Today`s world is faster then the 70s so the matches should be too. % hours of tennis only appeals to the die hards not the common fans. 5 set matches sould be only in the late rounds of the slams and all should have breakers at 6 all. Your other tournys should consider no add tennis and a max of 3 sets. Doubles has shortened their matches and it seems to work