Replacing multiple objects/layers at once (Not image)

[ashf]

Would be nice if I could replace multiple objects/layers at once.
For example, replacing objects with the clipboard content or a specific selected object (like the key object in alignment.)

[Old Bruce]

I long for the day we can do a simple "Paste Replace". By that I mean I have copied something and wish to replace the selection with it. Copy a triangle, select a square and have a menu command/contextual menu command to Paste the triangle into the rectangle's location replacing it. Hell I would love to be able to paste in the location I right-click on, using the context menu.