An independent pipette tool for each continuous property of the sculpt brush

At present, when we're choosing the colour of the sculpt brush, we can select any colour in the scene by hovering over an object with that colour and pressing R2. A very necessary feature, because a colour is three values - red, green, and blue - that vary continuously between 0.0 and 1.0, and it can't be copied exactly just by looking at it and manipulating the hue ring and the saturation / lightness triangle.

But the sculpt brush has other properties that vary continuously. There's the shape, which can be stretched asymmetrically or have its control points moved with the grid turned off in edit shape mode. There's the looseness, which can be adjusted continuously in edit shape mode using one of those circles where you drag the fill level up and down. And there's the blend softness, whose edit shape control is similar to that for looseness. The hole size is a mystery - its edit shape mode control is similar to those for looseness and blend softness, which suggests that it's continuous, but the observed behaviour of adjusting the control is that the hole in the brush jumps between discrete sizes.

It would be useful if for each of those continuous properties, we had a tool to copy that property from the edit the imp is hovering over to the current brush.

Not quite as useful for mirror, kaleidoscope, and cross-section - those are discrete properties that can easily be copied exactly.

Note that cloning an edit doesn't achieve this. The cloned edit will indeed have the property that you were interested in, but only because it also has all of the other properties of the original edit - the ones discussed above, plus operation (add / subtract / crop), stamp / smear, and smear path - that you might not have wanted to copy.