Allow copying the settings from one mask type to another.
Ever since the new masking features became available in ACR and LR my workflow has gradually changed from 10% raw/90% Photoshop, to in most cases, the complete opposite. That said, there is one feature I would love to see added at some point and that is the ability to copy the settings from a particular mask, say a radial mask that I frequently use as a quick test of what I'm looking to accomplish over a broad area of my compostion. It has worked very for this but quite often I then manually writing the settings down so I can transfer the exact combination to a brush mask so I can have finer control over my final edits. I realize that I can use the add and subtract sub-masks to achieve a similar outcome but I find I like using the brush much of the time as opposed to that approach. I see it being another option, much the same as "Duplicate and Invert" addition by selecting the context menu from the elipsis and chosing "Copy Settings" with then another obvious addition being "Paste Settings". I could see this being very useful in many instances and believe it would be a rather easy thing to add. Thank you so much for all of the additions and improvements to ACR over the past few years. I hope my idea finds it's way into one of the updates in the near future.

