I'm not sure who else would find it useful but being able to toggle the "Water" display on and off with a hotkey would make life a lot easier to check the visualization on the fly.
In my particular case I am wanting to check the terrain against the water level visualization every so often, which works great.
The problem comes into play when switching to a 2D node it shows up underneath the water visualization so I have to toggle off the water each time to check the 2D node from the 3D viewport
Unless there is a way to do this I am unaware of, if so my bad😅
Final visualization I am checking against
2D Height not visible from Water being enabled
After turning Water off