That's generally the problem when multi-platform software wants to "feel" the same on every platform. It just doesn't work. Mac users are used to a different UI

That's generally the problem when multi-platform software wants to "feel" the same on every platform. It just doesn't work. Mac users are used to a different UI, so even if you think that you approach is better, just don't do it. When it comes to usability, try to do it how everyone else developing for the platform is doing it.