Quick Pitch

[Softball]

Should umpires require pitchers to keep their hands separated (when they first step on the pitching plate) until the batter is looking at the pitcher? In many cases the pitcher is seen "presenting" the ball as soon as the batter is stepping into the box. It's understood the batter needs to be ready while in the box but their must be some common ground. Obviously, the pitcher has an advantage if she's already started her pitching motion (presented the ball) before the batter is truly ready. Im not referring to an intentional quick pitch, per say. My position is...pitcher should have their hands separated. Batter steps in. Taps the plate with her bat. Looks at pitcher. Pitcher then "presents" the ball. What do the rules support?