@demishadow23 I can’t claim any special insight into Dune or gaming in general, I just know how my various groups have always approached roleplay.
The way we view our games is as if they are TV Shows. We literally will talk about episodes and seasons when describing our games and where we are in them. Leverage is frequently cited.
So in that case we are both the writers and the actors. This isn’t restricted to Dune, this is all games we play.
In some ways I struggle to see how you could fully eliminate either of these views, quite possibly another of my blind spots. As has been pointed out I have several.
If you only view the world from the viewpoint of your Character then you wouldn’t be able to utilise the rules, dice and most of the other aspects of playing a game (possibly Glorantha and Amber aside) that a player handles.
On the other hand if you only view it from the position of the Player, then it is more like a board game and you are losing one of the key words in the hobby, Roleplay.
The main difference in Dune is that it has a mechanic that grants the Player some of the power to determine the scene that is normally restricted to the GM.
The examples are a bit confusing in that they talk about the character (Kara) asking to invoke traits and make rolls when really it is the player (Claire) who is doing these things.
If you look at the character creation examples it does better by describing Claire as the one making those mechanical choices.
To summarise my ramblings I think you as a Player make mechanical decisions, but your Character makes roleplay decisions.
I find it natural to shift between these states so I never really gave it a proper thought before. Dune just leans in the same direction as I do which is one of the reasons I have been so enamoured with it.
((I also know nothing about how to design or write a game system so I am of absolutely no use here ))