That's the point!
Our major weakness was the SF position, so you think that's what we are going to improve in this FA.
If we sign DH and keep Al we have a fantastic 4/5 rotation, but even if Sap plays the 3 for 10 minutes, we still have the same identical weakness at the three for 38 minutes. Is that clear?
we improve (because it's an improvement) in a "sector" which is already quite well covered, while we leave our uncovered sector pretty much untouched.