MacBook Pro with Retina Display 13" Late 2013 Repairability Score: 1 out of 10 (10 is easiest to repair)

Proprietary pentalobe screws continue to make opening the device unnecessarily difficult.

The battery assembly is now entirely, and very solidly, glued into the case, thus complicating replacement. Additionally, the battery now covers the screws and cable holding the trackpad in place. It is impossible to replace the trackpad without first removing the battery.

The Retina display is a fused unit with no protective glass. If anything ever fails inside the display, the entire ($$$) assembly will need to be replaced.

The RAM is soldered to the logic board, following the lead of the MacBook Air. Pay for the upgrade now, or be stuck with 4 GB forever. There is no chance of upgrade.

The proprietary SSD is now in a PCIe format, but still isn't a standard drive. Cross your fingers for future compatible drives; for now, you're stuck with what you've got.