Exactly what I think. As soon as the computing speed would be fast enough to call the shots real-time, I would spend more than only one thought about getting rid of all human line judges and would like this idea that Hawk Eye calls all shots.
That's what I am talking about. Linesmen/women have been great but at some points, there is no room for the slightest error.
It, post number #13, hasn't understood anything at all. The ball folks, and the Umpire would still remain but Hawkeye will end all disputes regarding line calls. It can be even improved to have the capability of counting the time players take between points and signal it to the Umpire to penalise them.