That's fine if that's your preference. Nothing wrong with it. My preference is simply different.
Yes, most likely. Again, it depends on what the purpose of the scene is and what it's contributing to the game. If it involves conflict of some sort, I'd be more inclined to let it continue. If it's literally a couple of characters chatting over tea with nothing of consequence, then yes, I'd call for an end to the scene and move on to the next one.
I don't find such compartmentalization particularly difficult... I mean, aren't you the one who talks about GM impartiality? How do you accomplish that? If GMs can do it, players can do it.
But also, I don't find it all that necessary.
That may be possible, yes, but I think it requires certain elements that many here are eschewing... so I'm not sure how common that may be.
Well, you're kind of starting in media res, no? That the setting is already constructed and a hook is already presented to the players. What about prior to that?
If we look at the game differently than many typically do.... like if we forget the geography and factions and NPCs and all that for a minute. Just think of all of that as information. Much of the game revolves around how this information is determined. I'm thinking of three methods.