I just happened across Epstein's opinion on this topic. Here is what he said in his forum.
"You say that you are not concerned with whether they stand up in front of the batters box or not. You should! Once hitters get more time through good hitting technique and a sound mental plan when they go to the plate, why give it back to the pitcher? It makes no sense to move up in the batters box! Sure, we often hear “cues” like, “Get the breaking pitch before it breaks,” “Hit the sinker before it sinks” or “Hit the rise ball before it rises.” Don’t fall for it; all you’ll be doing is giving the pitcher an advantage."
His whole post can be found at
http://www.mikeepsteinhitting.com/cgi-bin/dcforum/dcboard.cgi?az=show_thread&om=2968&forum=DCForumID2&omm=1&viewmode=threadedI am not posting this because I think he is all knowing, in fact there are several things we do not agree. In this instance we do.