I'm not sure if there's any good advice from Dramatica itself--this is Storyweaving we're talking about, after all--but in general, your first scene should establish the tone of your story. It wouldn't make any sense to start your rollicking action/comedy with something ultra-intense, but at the same time, it wouldn't make any sense to start a gritty noir/horror story with a frolic through the flowers. But leading the first scene with a burst of high intensity, then slowly building up to that level throughout the rest of the story--perfectly fine in my book.
Take, say, Mad Max: Fury Road, which has that early scene where he's getting chased by War Boys through their underground halls. It's frenetic, wild, and ridiculously metal--and then it just gets even crazier from there!
EDIT: Though I mention horror, which is a notable exception. Sometimes horror starts low and ramps up later--like my avatar's origin, Doki Doki Literature Club. Conversely, with something like When the Higurashi Cry, the opening of chapter 1 is incredibly intense, just to remind you that all the cutesy fun with the girls in the first three-quarters is all building up to some blood and gore by the end.