They showed the sportscasters' booth in OPACY. The crew has access to about 3-4 extra angles that we don't have, in addition to the "production" stream that we see on TV. It's laid out on a bunch of large monitors in front of them. It's not too bad.
At some places like at Nats Stadium, they probably rely more on the monitors than they do their own eyes, because the booth is so high up that the players look like tiny ants down on the field. Worse than the 300 sections at OPACY.
They'll figure out which monitors to look at, when, and be in good shape. The thing I'm more annoyed with is the MASN stream intern who can't keep the count and number of outs straight. It's like the MLB Gameday App intern who's usually several hitters behind and with a ~20% error rate on balls and strikes is now working for MASN.