First, our Pythagorean record says that we should have 92 wins, 5 more than what we have. IMO, that's the number you start with, not the 87 wins.
Secondly, no one is suggesting that the Sox do nothing. All I'm suggesting is that our offense is good enough that we do not need to pay an arm and a leg for an aging Encarnacion.
Thirdly, you can win just as many games scoring fewer runs if you allow fewer runs. Improving the pitching or defense can have the same effect as improving the offense.