This is for the Photoshop Light Room team. It would be really awesome if you can allow the user to adjust the density in the adjustment brush anytime after you brush on the mask on the image. Can you make this happen please.
I readjust the density on simple masks by re-brushing the same pin with a different density level. Not as easy as adjusting the slider, but it preserves the ability to use the density slider to apply different effect levels within the same mask.
For example, if I have subjects whose faces need dodging at different levels, I apply full density to one and lesser density to the other(s), all in the same pin. You can then modify the overall effect later using the relevant effect slider while essentially maintaining the ratio between the affected areas.