QHeaderView: Let it be able to indicate where a dragged section would be dropped

It would be nice if the header view could indicate where a dragged section would be dropped. The actual column header is shown being dragged, but it's not completely clear where it will land when the user 'drops' it. Suggestions for ideal behavior would be:

• Do not move the drag column under the mouse, but rather present a line indicating where the column will be dropped, like dragging tabs in Opera or Firefox.

• Keep the existing behaviour of showing the column being moved, but have it 'snap' to where it will appear. For instance, if the mouse cursor is dragged from left to right over another column, then the column would stay glued to the left-hand side until the cursor reaches the halfway point, at which point it would snap to the right-hand side of the column.