P: Merge to panorama - ability to combine the keywords from the photos into the pano file

My recipe ensures you get all the merged keywords, with just one copy/paste. You don't have to inspect the individual images, and you'll never get duplicate keywords (LR will never assign duplicate keywords).

I know you can copy whole batches of assigned keywords from one image to another via the Metadata tab, but I believe if one copies and pastes from each of the images forming the panorama, one could risk ending up with having duplicate keywords getting assigned to the pano in certain cases.
This is unless one inspected the list of keywords assigned to each image and copied over to the panorama only the relevant keywords..

What I'm hoping to do, is to automate the process as much as possible to speed up things, and skip having to check every time.

I hope it makes sense.

Step 5 should read:

5. When the merge completes, select the panorama, then go to the Keywording panel and do Cmd + V / Ctrl + V to paste the copied keywords.

Here's a simple way to assign the merged keywords to the panorama (it looks more complicated than it actually is):

1. Select the photos to be merged.  

2. Before doing the Photo Merge > Panorama command, go to the Keywording panel on the right of Library.

3. Select all the keywords and type Cmd + C (Mac) or Ctrl + C (Windows) to copy them.  

4. Now do the merge.

5. When the merge completes, go to the Keywording panel and do Cmd + V / Ctrl + V to paste the copied keywords.

6. Some of the keywords may have an asterisk (*) after them, indicating they appeared on only some of the photos.  Delete the asterisks.

This isn't as convenient as having an option to do the merge automatically, of course.

While you're at it, you could allow for adding default keywords or color labels. I tag all my panos "Panorama" (in case the filename does not contain "_pano.dng" for some obscure reason) and assign the yellow color label. Clicking on every panorama and keywording it "Panorama" is cumbersome, if you could assing this keyword during creation

Current behavior is for the Active (most-selected) photo of those photos selected for the Merge to Panorama to drive the Keywords for the resulting panorama. At this time there isn't a facility for merging the keywords during the panorama stitching process. 

I am going to convert this to an Idea (feature request) so that others who might wish for it can add their "me toos"