I owe a great debt of gratitude to ES member agniusm, for the time that he posted pics of his copper bus-plates that had been nickel-plated. (I also owe a great appreciation to snath!). I believe he had them sent out to be plated, and that sounded expensive and time-consuming. The actual plating process only uses a very tiny volume of nickel, so the price of nickel would no longer be a concern, however...I assumed that home-plating of nickel would be a PITA. After some research, I now believe that home nickel-plating would not be difficult. It looks like it is easy, cheap, and fast. Adding a resistive plating to copper means that it can then be easily spot-welded without resorting to exotic machines or techniques, and if the plating is corrosion-resistant, then all the better.
Pure nickel = high resistance, very corrosion-resistant, easy to spot-weld, expensive in the future
Pure copper = great conductivity, corrodes easily, hard to spot-weld, cheap and readily available plus should remain cheap
"DIY plating nickel onto copper"
https://www.youtube.com/watch?v=Q8Xo43sfLgY
Agniusm using nickel-plated copper
https://endless-sphere.com/forums/viewtopic.php?f=14&t=63190&start=100#p1164028
Pure nickel = high resistance, very corrosion-resistant, easy to spot-weld, expensive in the future
Pure copper = great conductivity, corrodes easily, hard to spot-weld, cheap and readily available plus should remain cheap
"DIY plating nickel onto copper"
https://www.youtube.com/watch?v=Q8Xo43sfLgY
Agniusm using nickel-plated copper
https://endless-sphere.com/forums/viewtopic.php?f=14&t=63190&start=100#p1164028