I find myself doing a lot of retagging when I copy and paste stuff. E.g. if I make a sensor with the tag "wall1" and attach a thruster that activated on "wall1", when I copy and paste that I have to manually change the 1 to a 2.
It would be great if there was a reserved character that would be replaced on copy paste. So in the above example I might use the tag "wall%" and then each copy pasted clone would automatically replace the % character with 1, 2, 3... etc.
The factory block could also benefit from a similar mechanic.
