Why would that be smarter? Do you want to snap the bounding box of only the item that's under the mouse pointer, instead of the bounding box of each item in the selection?
Take a look on http://ftpmerou.free.fr/inkscape/snap-bounding-box-selection.png to see what I mean. I just want to snap to the middle bounding box of the "middle man" not the bounding box of all the selection. In the case I want to snap to all the selection, I will group it.
