In 2012 when the Retina MBPs were first released, they all had Thunderbolt 1 ports. Now no one even uses it and they have a new Thunderbolt port in a different shape (USB-C). If all iOS devices came with a USB-C Lightning cable, I would consider getting the new MBP but to me all I see is a MBP with 4 "Thunderbolt 1" ports. Even the iPhone power adapter that you plug into the wall is only compatible with a USB-A Lightning cable. Didn't we go down this same road with Thunderbolt 1? Except back then they had other ports to keep us sane (USB, HDMI, etc). Now we just have 4 unproven ports.