Feature request: Allow "Attach Preview Asset" in skeletal mesh editor to attach decal

I am using decals for a variety of gameplay purposes, and it is extremely time-consuming to place sockets in the skeletal mesh editor, and then have to keep bouncing back & forth to the game to test their transforms - the size, location and orientation are tough to get just right.

It would be awesome if the “Attach preview asset” function in the skeletal mesh editor allowed you to place decals to preview their placement in real-time.