Sculpting the perfect Landscape

The idea of a Voroni tool sounds very cool.
One thought to make sculpting must faster would be to have easy smooth toggling.
Many sculpting tools let you switch between three modes without ever needing to change tools.
Sculpt Add/Sculpt Subtract…and most importantly Smooth!
Being able to easily switch to the smooth tool makes up for lots of stepping with sculpting tools.
Perhaps Ctrl, Alt, LMB for toggle to smooth tool.
This would be a welcome feature for anyone coming from other packages.
Just wanted to add my two cents.