Turn existing objects into clones

Please, make it so we can turn existing object/s into clone/s of another existing or new object.

I am aware of Relink to copied but it is not what I need.

I would like to be able to turn any already existing object into a clone of another existing object that's the same, without having to have them being clones in the past or the new desired original being duplicate.

I need the following:

You have 200 squares that are spread around the document unevenly and you need to edit them all and you need them at those exact places so you can't easily delete 199 of them and create 199 clones of the 1 left using Clone and Distribute.
What would be the easiest way to do it, is: You select those 199 and choose something like Edit > Clone > Turn into clones and then you are asked to select what would be the original. You select that 1 square and voila! You turned those 200 existing squares into 1 original and 199 clones.

Or you don't have to select the original, you can copy it and then select the other 199 squares and use Edit > Clone > Link to copied. So it would be like Relink to copied but the copied one doesn't have to be a duplicate or clone of anything/or anything and the 'to be clones' don't need to have been clones.