Sounds good, but...
The first game was scripted, I don't think it tells us anything for the season beyond who he thinks his top guys are...which we already knew. And I don't think that's just a Rocco thing for openers. Pablo Lopez wasn't going more than 6 innings....J Lopez, Jax, and Duran were all going to get an inning (or so).
Thielbar was going to show up if the game situation demanded it. It did. Other than that, he may have had a moment to reflect on the sequencing of J Lopez vs Jax. That's about it.
I'm fine with this on opening day with a scheduled off day. He wasn't going to stretch the starter much right out of the box, and he wanted his main guys to get their feet wet.
I'll look for Rocco to get more 'situational' as the season wears on. But, even though I've been critical of Rocco here, you can only do so much. As they relate to a specific pitcher's strengths, batting orders are random...deliberately so. And then there's the 3-batter rule.
You can't control that much. It's mostly just knowing when (and when not) to pull the starter (both from a tactical and longer-term perspective); only burning your top guys in leverage; and knowing when you can (or have to) give the bottom guys a chance in leverage. This is what Rocco can control, and where I think there's room for improvement. Also, from a mental and preparation standpoint, there is some value in routine (i.e., I know I'm the seventh inning guy). Again how this is balanced against situational needs is where the art (not really science) of being good comes in.