Personally, and that means me, I know when a pitch isn't working and not to throw the same pitch... If X batter hits my curveball, I probably wouldn't throw him another, but that doesn't mean that all players will get hits off it, and I wouldn't nor shouldn't be afraid to throw it again. I am certain real pitchers in real life will continue throwing pitches that get hit in the same game. The only time no pitch gets hit is in a no hitter.
Now, if they want to use this pitch system for Rookies to baseball, then make it an option to have on and off.
And, I want to see how this new pitch system affects the CPU pitcher.