I believe Glenn called for something that lets him do desktop applets, not
standard GUI. Can you make something like completely borderless windows
non-rectangular shapes in FOX?
<insert random religious rant against synthetic GUIs from a recent KDE
I think this is possible. The borderlessness may be achieved using option
showing non-rectangular windows is possible from FOX1.4 upwards
according to the changelog.
But I haven't tried out this so far myself....