That's the crux for a lot of these trades. With Lindor, it'll be 5 years. Out-performing at age 33 is difficult, so what are the chances of doing so for 5 years? The odds of finding someone with a 7.5 cumulative fWAR for years 35-37 is a unicorn. In the past ten years, there is Justin Turner with a 7.7,and Nelson Cruz, but I'm not including him on the PEDs issue. Even assuming Lindor is THE unicorn, we'd need 10 WAR from him the next two seasons.
Again, I'm not necessarily opposed to adding him, but just not at that price. Just imho, I'm in the camp of acquiring a 1-2 year type of player. I think some of the guys mention, Arraez, Steer, Ward, Adell, can supply a lot of value without a lot of l/t costs.