It's rather annoying when a starting pitcher is pulled from the game in the middle of an inning when he's still 10, 20, even 30 pitches or more below his TPC. Especially when his Call Bullpen setting is the lowest it can be at 1. This can do heavy damage to a bullpen's fatigue, especially early on in the season, and can take days, even weeks, to recover from.
As SIM managers, we need to be given more control over how many pitches our starters actually throw. Call Bullpen setting of 0 will do exactly that.