Anything that can get the frustration out of prototyping has got to be a good idea. For a field service engineer this has to be a great tool.
For the service engineer working on something like a track signal circuit (railway), being able to confirm that the circuit wires have gone back on the correct locations would have been such a boon and saved a lot of worry.
This is good tech, I would like to see how low the cost would be for Arduino users?
I had a similar reaction till I imagined troubleshooting a circuit that I didn't quite understand. You could click on something and it would say "this is an X and it does this, test this piont for this result"
When I first saw the video I was just so-so, but then it hit me how awesome this tool would be for analyzing old circuit boards to understand the design and functions. I could easily see this type of tool as an integrated way to take a board and reconstruct the circuit schematic and generate a PCB layout to make a replacement.