So... it has a menu bar where it belongs: on the application's main frame. But yes, that'll be jarring for Mac users, who have suffered a single menu with split-personality disorder for far too long.

As for the common dialogs, I agree with you. There's no better example of why you should stick with common dialogs than the shitshow that is Microsoft Office. The file-save... thing is mind-bogglingly bad. It looks like a hastily-thrown-together debug screen. You have no idea what you're looking at. The fields are primitive, unnecessarily-huge box outlines. There's no treeview to show you where you're working in the filesystem. There's a big list of what, history? Why?

Garbage.