Add a "fit to screen" or something similar to the window menu or adopt the Premiere Pro way of handling workspaces.
I need to be able to do the same thing as a double click on the top bar on mac, as when i switch between home and office setup with my mac pro i often have the software 90% of screen to one side or another.

As I write this, i CANNOT use the software because the top third of the app is off screen so i don't have access to any of the tools, layers selection etc. Workaround in Premiere is to reset the workspace to a saved layout as it adapts automatically to different screen resolution and sizes, but AE doesn't and stays stupidly hanging too high on my screen.