My main issue is actually very non-technical. After I have switched to macOS I've started to put more and more importance to the consistency of the interface. G

My main issue is actually very non-technical. After I have switched to macOS I've started to put more and more importance to the consistency of the interface. GIMP is very different as it is not rendered using native Cocoa widgets. Things like non-native open/save dialog, clipboard support and drag and drop. It also felt quite slow, compared to when I used it on Linux.