I mean I imagine a large part of the "look and feel" specificities in mac apps are questions of tastes and beauty and conventions rather than core functionality

I mean I imagine a large part of the "look and feel" specificities in mac apps are questions of tastes and beauty and conventions rather than core functionality. And this matter, don't get me wrong, just not always at the same level as being able to use the app without waiting x months of more development. Sorry if the term was inadequate or sounded pejorative.