Opinions on rear spring idea

1968FormulaS340 said
Re-arch No extra leafs. Lowest cost and it will be good for another 20 years with a nice, smooth, stock ride.

I was only thinking of the extra leaf to prevent the springs from sagging again. I wasn't sure if simply re-arching would last very long, don't want to take them out again a couple months after the re-arch because the dropped again