I sometimes do things, and looking back I don't know why. One thing I know I do is create copies of AutoCAD entities exactly on top of the original entities. This seems stupid, and I cannot think of a good reason why. I just know that while in full on drafting mode, I do it.
Knowing that I do this, I was happy to see a command line option I never noticed before in the Move and Copy commands.
Specify base point or [Displacement/mOde/Multiple] <Displacement>:
Specify second point or [Array] <use first point as displacement>:
By using this option, I can just place the copy smack on top of the original by hitting the enter key or space bar.