As a theme designer it would be nice to be able to specify regions that could act as resize areas. A theme with 1 pixel or no side borders, but a thick 5px bar on bottom would work fine if you could declare that the 10 pixels of the bottom bar at the left and right side were to act as a corner resize, giving the user a 50 pixel area on either corner for resizing. As is, if you have no border or a thin border, it's virtually impossible to actually resize a window without using shortcuts.
As a theme designer it would be nice to be able to specify regions that could act as resize areas. A theme with 1 pixel or no side borders, but a thick 5px bar on bottom would work fine if you could declare that the 10 pixels of the bottom bar at the left and right side were to act as a corner resize, giving the user a 50 pixel area on either corner for resizing. As is, if you have no border or a thin border, it's virtually impossible to actually resize a window without using shortcuts.