we just need more variety on tour... if all courts are the same we'll get cookie cutter pros with limited skillsets.
there is a reason federer is so good. he was an all courter who had to deal both with quick surfaces and slow ones against server and vollyers and baseliners (attacking and pushing). this forced him to develop the movement, the power, the touch and intelligence needed to compete with everyone across different eras and using different string tech...
servebots can tweet about it all they want. their solution is just as bad as the grinders and the suits. what we need is different conditions and surfaces in different tournaments so we can have complete tennis players that can't hide behind a big serve or the speed to run down balls and mindlessly hit them cross court with topspin.
we have to get the tournaments competing among one another on who has the most interesting tennis, rather than making them all the same.
Disclaimer: I'm NOT a coach...
Real tennis: https://www.youtube.com/watch?v=yDqnkLJ9BtM