Why? Devils Pie shows that this can be handled at a higher level, and indeed it seems to me to make much more sense to handle it at a higher level - then you can handle overlaps etc in a graceful fashion.
Just because remembering window placement isn't currently handled by the window manager (and really, doesn't that sound weird to you?!), doesn't mean that shouldn't change if by changing it we can improve UX.
"This is not the job of the window manager"
Why? Devils Pie shows that this can be handled at a higher level, and indeed it seems to me to make much more sense to handle it at a higher level - then you can handle overlaps etc in a graceful fashion.
Just because remembering window placement isn't currently handled by the window manager (and really, doesn't that sound weird to you?!), doesn't mean that shouldn't change if by changing it we can improve UX.