I can’t speak to the differences between the Mac and Windows version, but the Mac version is certainly in need of an “inter-facelift”. I’m speaking about everything that happens outside of the 3-D modeling viewport. The modeling functionality is brilliant, but the rest of the interface leaves much to be desired. It doesn’t seem to have changed since I first discovered the program nearly a decade ago. I find the task of managing scenes, materials, and styles to be downright baffling at times. There are numerous nonstandard clickable doodads and widgets. This is not purely an aesthetic issue, but one of usability. The interface could be updated, simplified, and enhanced to reduce clutter and confusion, resulting in a much improved user experience.
Is there an official place to suggest enhancements and feature requests?