I agree with the pitch count minimum ctiricisms, but I think I can see why it was put in-- so that owners could no longer put in, for example, a LHP against a platoon-heavy lineup, let him go for one batter, and then sneak in the "real" pitcher who's right-handed. So if you start a pitcher, unless he pitches terribly and gets pulled early, he is going to have to go through the lineup at least once. So I do like that aspect, even though the tradeoff is that owners get less control over their tandems.
Speaking of tandems, though, are they EVER going to fix them? Tandem 5 and Tandem 6 have never been available, and there is no reason at all to force owners to make tandem starters the last starters in the rotation; both of these fixes would be welcome additions.