I don't mean this to come across as snarky, but you do know that the story is supposed to choose the structure, and not you?
Initially I came here to address a different point, though, which I will do here. I think the best answer to your question will be found by taking your favorite single POV story and reading it again while trying to answer this question. I know there is probably an objective answer out there to be found, but I think you will find what works best for you by using some elbow grease.
In addition, you can then come here with specific questions, along the lines of, "I read this text and am having trouble figuring out if this part here belongs to the OS or the MC thread..."
Dramatica, as you know, is abstract. Concrete examples go a long way, though it can be hard when you have read an entire book and nobody else knows it. It's why the movie podcasts can be wonderful -- but movies only take two hours.
You should have an analysis of Lord of the Flies with your software. That's the novel, not the movie. If you want to read that book and try to answer this question for yourself, you'll have a nice cheatsheet to guide you. And, lemme tell you, cheatsheets in Dramatica are a wonderful tool not to be overlooked.