More brake

On a 1995 R1100RS I am replacing brake line, and other stuff on a bike in 50,000 miles ballpark and I have some questions on front calipers.





Pads are removed, center pin replaced.
My question should all these pins be nice clean and shiny? I assume the answer is yes, the two outside pins appear to hold the two halves of calipers together if I remove them to clean them up do I have to rebuild calipers? Other option soft brush and a couple of cans of brake cleaner along with eye protection and gloves and clean away with out removing pins

I thinking rebuilding them with the age they are would be a good idea. Other than that, just a clean up with an old tooth brush and brake clean should do it.