Hitting is at historic low points, and you want to raise the mound?
Less arm injuries. TJ was never a thing until it was lowered. It is the single factor for the creation of saves and big bull pens.
It really has nothing to do with balance. It is about safety. Give the hitters a cookie or two to balance the game. Like A DH and a bouncy ball like 2019. But give the pitchers their arms back. When TJ is so common where you expect a pitcher to get it and it never existed pre lowering there is a core mechanical issue going on.