It's insufficient today, agreed. We're past the era of "somehow intuitive winky blinky lights that give the characters the data needed" to propel the plot along. It's a part of the time it was made, but today that doesn't go over. I'm fine with winky blinkies to handle carrying out of tasks, like phasers and push the button to make the ship go and whatnot. Any bridge set made since cries out for data displays of some sort, but 1966 didn't have that tech available without using "burn in" screens which required a camera lockdown or expensive and noisy rear projection.
However, in the time it was made, the TOS design was great. We accepted lashing lights and sound effects as "futuristic functional." TOS reflected how the future might look to the era. Today it's a retro vision and Star Trek was never that. I think with the tech, SNW get that part just right.