You're in the right ballpark, but it's a bit more complex than that. If you're really curious about how and when openers work you should study Vin-Dicalos opening philosophy.
Basically he breaks down environments, and girls mental blueprints. Then he shows you a calibrated way of opening that optimal for the environment, but pivots to the correct style for what the girl is comfortable with by watching her reaction.
Girls are either direct or indirect based off of the timeline they use for dating strategies. Whether they like to stick to one man, or pick from a bunch of men.
Static - Dynamic - Dynamic in static are the three pick up - environments where things like college and workplaces are special circumstances that require a longer opening sequence for best results.
But the map isn't the territory that's why you do calibrated opening where you use what's best for the situation at first and then pivot off of her reaction.
Justin Wayne took his concepts and evolved them doing daygame in New York. SO what he does is he brok opening down into 3 categories. Direct - Indirect - and Neutral. And he has a flexible game system that simply starts off indirect then quickly transitions through neutral and into direct. He calls it direct game, but the opener just paces her reality into the direct game. But he'll also throw out an opening primer before hand and look at her reaction to see how receptive she is.
A guy posting about these looks the other day:
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The girls who are most receptive you can go direct on, while the shyer ones you go indirect or neutral with, and the ones you can't tell you go neutral or indirect with.
I like this much better because you're going from 0-100 really fucking quick but it's designed to progress as you test her reality.
I melded the ideas a bit for myself where I throw out my tester, use the thing most appropriate then calibrate to what's most acceptable to her, and then progress through a direct system that becomes more intense as the game goes forward.
It sound's like a lot typing it out here, and I'll admit that there is a bit of a learning curve but after you practice for a few hours and do it in the field it becomes second nature. Plus the opener isn't really that long even while calibrated the whole thing goes down in about 15-20 seconds.