What else do you expect from a guy who proposed two year ranking rule that was clearly self-serving and has no logic?
Two chances at serve is an important rule that has to be maintained. Tennis will never be taken over by players who
are just big servers. The second serve helps the weaker serves more than the stronger servers. It is foolish to think
otherwise.
As the article says, it is true that players are getting injured more even though they are playing the same number of tourneys as in the past, due to the game being physical. But the game is physical, not just during serve. Modern game is quite physical even otherwise. For example, JMDP was hitting ground stroke winners at more than 100 mph (in USO 2009 final). So, what next? Do we want to ban players hitting shots at more than 100 mph? Obviously not.
The only change in rules that I would consider is the following: I would change the structure of Masters tourneys (to something like, but not exactly the same, what they have in WTA). Increase the number of Masters tourneys to 10 by adding a Grass Masters. Now, make five Masters Tourneys, viz., the one before each GS and the one before WTF, mandatory. Ask players to pick any three of their choice from the remaining five Masters. Finally, reduce the number of countable tourneys to 16 from the current 18. These changes would simultaneously both reduce the number of tourneys a player plays in and give them more choice in deciding which ones to play in.