Hi.  I've read through all of bug 81551 and this is not a request to allow
placement of windows over top of panels.  This is, however, a losely
related issue.

What I want to be able to do is to move a window above and under the menu
panel at the top of the screen (ie: so that only the bottom half of the
window is sticking out, while the panel is on top of the middle of the
window and the top of the window is off of the top of the screen)

something like this:

      ..window..........
      .                .
  /---------------------------  screen edge
  |#####PANEL#################
  |   |                |
  |   \----------------/

It's obviously desirable to keep the current behaviour that when a window
maximises, it avoids the panel.

It might also be desirable to prevent the user from dragging the title bar
of the application under the panel (because it would be fairly pointless as
they wouldn't get very far)  I also suggest this because if the user hides
the title bar of an app under the panel they might not know how to get it back.

What I am proposing is that this behaviour is only allowed when doing an
alt+drag move on the body of the window.  If the user knows how to get it
up there, they know how to get it back.

Comments?  Flames?