It is my impression that very few of these links have been replaced in several tens of thousands of flying hours of the 235/320/360 fleet.  If true, then why re-engineer this part?  Why not just replace it with new when it shows signs of wear?  After 6 years, 400 hours, 1100 landings and, yes, more than my share of inept/abrupt landings, my link shows no sign of elongation or wear.   Greg Nelson