Uniformiity? Maybe, but I don't understand that. As long as there is a pitching rubber and each pitcher has to keep her pivot foot on it, that should cover it. That keeps everybody the same distance from the plate. That and requiring the toe to drag should really be enough. Deliveries should be allowed to be different, within reason. In fact all deliveries are a little different. A lot of girls like to do a little turn to the right or left before the pitch, some more than others. But not all.Some girls bend more at the waist. People who didn't see Megan Rhodes pitch in high school wouldn't believe how much she bent. She bent completely double and touched the dirt with her glove and threw the ball from that position. They changed that style when she got to UT.Some squat before they throw. It escapes me right now, but there is a current NCAA pitcher who squats nearly completely and I can't for the life of me see how her thighs make it through an entire game. You don't see the slingshot delivery anymore, but i assume it's still allowed. Girls just find the windmill allows them to throw harder. But why allow both the windmill and the slingshot? One might give an advantage over the other. I think because as long as each pitcher ends up pushing off from the same rubber, at the same distance from home, they should be allowed to have different technique in getting there.A baseball pitcher pitching from the windup is allowed to step off the rubber with his free foot, backwards or sideways, whatever each pitcher feels he needs to do to get his timing and to get his body in the best position to throw the ball. But they all eventually end up in basically the same position pushing off with the pivot foot and striding to the plate. I just think requiring the free foot to be in contact is kinda random and I think it probably leads to more stress on the back and arm. I've rambled way too long but that's just my humble opinion