If we were talking about laptops or desktops, this would be a bigger deal, because there are more occasions when you transfer data over USB. Looking at broader iPad usage, really not a lot of data passes through the Lightning connector other than if you sync to a computer using iTunes. Most people don’t need it.
But for photographers who want to transfer photos for review or editing from a camera to the iPad, this is almost crippling.
When I reviewed the 12.9-inch iPad Pro, I made a short comparison video showing import speeds using the old SD card adapter and the new USB 3-capable one. Transferring 1.5 GB of image files took 30 seconds via USB 3 and 2 minutes 20 seconds via USB 2. That’s the actual data transfer; just moving image thumbnails so I could preview the photos before importing took 23 seconds via USB 3 and 1 minute 16 seconds via USB 2.