We see relatively little of the transporter operator's POV in Trek. Yet from "The Cage" on, he or she seems to enjoy access to sensor data: "There is a canyon to the left".
The weird thing is that such a visual apparently is only briefly glimpsed by the operator, and is turned off by the time the audience gets a look at the console. It would appear intuitively useful to constantly monitor the target site and information superimposed on that view, rather than eyeballing the transportees. But apparently not. Perhaps the trained eye can spot signs of trouble in the glimmering of the transportee, and for this reason the operator keeps his or her eyes locked on the platforms while operating the sliders.
Timo Saloniemi