[greymule]

I was going to suggest the LBR, but you guys beat me to it. Actually, some version of the LBR might be good for lower-level baseball if "taunting" as described in the OP is a problem. The LBR can work only in a game in which, when the pitcher has the ball on the mound, runners have to be on the bag and cannot take leads.

At the upper levels of softball there's some sentiment for getting rid of it as unnecessary.

A strict adoption of the LBR would require more than a little training for umpires, though. The LBR can get rather complicated; even some college coaches have misconceptions about it. And NCAA and ASA have some hairline differences.