Agreeing to do met while plugged in opens more cans of worms than is probably realised. As most met screens face away from aprons and runways (they don't actually want the ATSA's to see what's going on, we might prove useful) you will need to turn away from the safety critical area of responsibility. So when the controller is fighting with samos and a vehicle trundles onto the runway unnoticed, controller in the tower on their own (as getting ATSA's off nights is clearly a management desire) and the a/c short finals doesn't spot it either, then what happens? Let's hope NATS legal are on their A game that day in court! There's penny pinching and there's retrograde safety steps. The two don't mix