I think gen5 link is good for track junkie. Without having numbers, but looking at attached image, I would say two statements.
a) Link is more linear like text says and can see that angle from swingarm bolt to shock bolt is more upright (link rotation causes more initial spring movement).
b) Link ratio must be lower than gen4 (closer to aftermarket ratio, since measurement A/B ratio is better).
Ohlins has already shock (KA364) for 2016, but spring spec. unknown. I estmate when that Ohlins spring is now below 110N then we may not need link replacement.