I have a little suggestion for future AGS 3 releases:
I've set my ags up so that the project tree is docked on the left hand side. Is it possible to be able to dock the properties window on the right hand side? Such as:
[ Titlebar ]
[ Menu ]
[ project tree | work area | properties ]
[ status bar ]
I personally feel that the properties panel needs to be a little wider than then game tree panel, and it typically requires more vertical space, so I feel the real state would be more efficient this way because the game tree doesn't need to be as wide as the properties. I've also seen a lot of game tools that are setup this way, with the project tree to the left, and the properties to the right.
I'd be happy with just having the extra option for the properties window in the editor settings, or even having the ability to drag and drop all the ags panels to my own way. However, my radical suggestion would be to actually make this layout the default for future AGS versions.