Don't like it!!
I think quite a nice part of tennis is that the players get fierd up and annoyed with the umpires at critical points. I mean in the past it may have been unfair on some players at extreme moments when they needed the point.. and im not excluding the fact that the umpires have been wrong, more than a couple of times.. but it all evens out in a player's carrear.
It's like we've got a mechanical sort of umpire now.
I prefered the old system!!