Thanks for all the replies!
Grips: As a highly sensitive person, these divots would get on my nerves. My hands would be very aware of the differences between left and right. Just the way I am. I heard no nays on the Sugru, and since I had already bought some I tried it out. It is curing now, but so far it looks pretty good. Will see how it holds up. For the record, these poles are Fizan.
Mesh: Perhaps I'll take the pack to a fabric store and see if they have some stretchy iron-on mesh as was suggested. Your posts also reminded me that I think I have some stretchy mesh scraps that I saved from some old garment, and I might be able to seam-grip a piece on. This mesh is between my back and the pack's pad right where most of the load sits, so I wouldn't want to just leave it alone.
Hey, I'm all for character marks and backcountry cred when it doesn't impact performance, but I take more pride in a repair that extends the life of gear than I do "just using it up".
Thanks again. I'll follow up with photos of the repairs.
-Stephen