I bought Playmaker quite a long time ago and am getting back into Unity dev for a project idea. However, I never got much further than a single-scene project previously. For my project idea, in concept it should have different scenes in much the same way many games do. A splash, a main menu, a world map, an inventory popup, etc., and various choices or encounters in one scene should make it obvious to the game scene manager on what should get loaded next.
This is a generic overview of what scenes the user should see. As I said, you can imagine Mario or Zelda or Darkest Dungeon or many other games working on a similar skeleton.
The thing is, even though this diagram LOOKS like it would translate to a FSM pretty readily, I don't understand how to achieve it with Playmaker and Unity. I have fumbled around with scripts that do a bunch of LoadSceneAdditively() calls, which kinda works but is clunky, and does not handle the "LOADING..." interstitial case at all. Unity seems to tell your script that the next scene has been loaded before it has really been fully loaded, there are warnings about two audio listeners when you're trying to transition from one camera to the next scene's camera, etc.
So I guess I would like to see a tutorial or a sample project which can implement even a portion of this kind of basic game structure cleanly with an FSM. I kept the overview super-generic so that you might be able to post the project for other people to get help also.