I've been hoping for this kind of change ever since the move to individual pitches. I can't wait to try it. It's a true game-changer for me.
Does height really have a relationship to stam or effectiveness? Seems questionable, so I poked around a little bit. No big surprise that SABR explored the topic.
Does a Pitcher's Height Matter
"As you can see in table 1 (Starting Pitching Effectiveness), the data show no evidence of a statistically significant correlation, for starting pitchers, between height (in inches) and any of the customary measures of pitching effectiveness."