This isn't really a bad idea. This doesn't change much nerfing, other than replacing the surge cushion with a cool aesthetical method of preventing the waterbender's fall, so kudos for that! (y)
Edit: Even if it does change the idea of requiring a big pool body of water than bottles, I still don't mind this being implanted in the plugin. Not sure about the rest community who had seen this request, If they agree on this change or not.