Add 2nd sharpening step which acts upon the results of the first step

Question

Consider adding a 2nd sharpening step which acts upon the results of the first step.  For artsy reasons, you might want normal sharpening, then enhance edges as a second step.  For lower quality images, two sharpenings can be an effective form of noise reduction.  For whatever reason I often run two sharpening steps in a row in CS5, where the second step would look bad without the first.

Answer 1

Scott T Martin wrote:
Lightroom already has 3 levels of sharpening: "capture" sharpening in the develop module (detail panel), "creative" sharpening with the localized adjustment brush and "print" sharpening in the print module.
Is there a problem with the current implementation that you think could be improved?
A good example is one I had yesterday: a raw camera file of a water action shot where it is desirable to have two sets of sharpen settings, --one finer radius (.8 to 1.2) for the normal sharpening of the shot, and then another step which is a coarse one (about 2.1 + separate detail/masking setting) to enhance water droplets.  The second masking only applies to the second step, thereby preserving the desirable sharpened detail of the first step.  This allows the water droplets to be targeted in a narrow bandwidth, and made spherical and sparkely, giving the photo depth.  The same could apply to coarse animal hair, ice crystals, etc.   The reason I want the sharpen steps in "capture" mode is so they can be copied separately and pasted to multiple photos. 
The only way to do this now is to use CS5 to sharpen the water droplets after the normal sharpen which then severs the chain of Lightroom history.   It's much harder to reverse a previous change once Photoshop is resorted to.  And subsequent changes do not behave the same on a non-raw image.
What type of image content are you using that the current set of tools isn't satisfactory? (ie: are you talking about camera RAW files or film scans that were shot out of focus? More details would help.)
Actually both.  Other uses I've had for a second sharpening step is to target, and enhance edges on lower quality scanned images. However I have less of a problem fixing these images in Photoshop because: they are usually one-of-a-kind, and they have no raw data to work with.  I just make sure the scan is as accurate as possible and that becomes the starting point.
The brush sharpen is handy but not for the above purpose requiring a different radius.  And of course copy/pasting brush strokes does not work on action photos.
I hope this helps to clarify my request