This script manages all polySmoothFace nodes in scene., swithcing the number of divisions from 0 to 2.
You can also:

1) Smooth one or more selected objs at once.
2) Delete All polySmoothFace in the scene.
3) Delete all polySmoothFace in one or more selected objects
4) Reapply Smoth node. When you turn to level 0 and make a tweak, and go back to another level,
Things get weird, because the polySmooth should be happening last. This delete the smooth nodes and reapply them back.