The problem with shotspot is there are siginficant doubts over its accuracy. There are several different types of hardware being used by different television broadcasters: at the BBC at Wimbledon, they use 'Hawkeye' which I have noticed seems to be pretty accurate. On the opposite end of the quality scale, you have the abysmal 'Tennis Masters Eye' which has been embarresingly wrong on a number of different occasions- there have been times when the computer graphic has shown something completely different from the pictures seen in the T.V replay.
I don't know anything about 'Shotspot', is this a U.S type of technology and at which tournaments has it been used?
I am in favour of using this type of technology regularly at all events, provided it is shown to be reliable at recreating the actual flight of the ball with reasonable accuracy.