When a pitcher has a catcher that they can throw any pitch to without worrying about whether the catcher will handle it cleanly it provides a real confidence boost. On top of that, good receiving is likely to gain an additional 5-10 called strikes to game, which can make a huge difference.
IME, as the pitchers get better and they consistently hit their spots, the apparent need for accomplished catchers lessens. Unless they were a high-level pitcher or catcher, many coaches underestimate and don't appreciate the tangible and intangible differences an accomplished catcher can make. Even at the college level, I see a number of coaches yielding to the temptation to sacrifice the position in favor of a bigger bat; considering that the catcher catches for approx. 25-35 at bats during a game, and only has 2-4 at bat/game, that is shortsighted IMO.
Very true. In the case of my DD is was the difference between a poor catcher and a competent catcher. This season she has yet another catcher that she says is one of the very best she has had. Looking forward to the 4 hour drive to her school this weekend!