I like your ideas, but I think I'm heading in a slightly different direction.
I want this system to be as generic as possible, but leave many options for cinematic conflict. I know that it won't be able to support certain adaptations of stories such as "The Old Man and the Sea" by Ernest Hemingway. Yet I want it to support a game adaptation of, let's say, "A Few Good Men" (if you don't know what I'm talking about, "you can't handle the truth!" *hint*) as well as something like "The Texas Chain Saw Massacre". If you look at those two films, you can see that the Characters are fighting for extremely distinct goals (A Few Good Men - Acquit/Convict the two Marines, The Texas Chain Saw Massacre - Survive from the Cannibal Family/Kill the Teenagers).
So, I don't want to set an objective to win the game. I would rather the individual game creator to come up with a creative objective.
Now, I know I'm probably going to upset some people with the following: I plan to have this rules system function like a hybrid between a Card Game, a Board Game, and a Tabletop Roleplaying Game. However, I know there are people who will think that would be too complex, so I will make sure I create a simplified system which will make it easier to create less "convoluted" games.
I know this sounds like I'm just posting a bunch of random ideas, but I am currently writing down the ruleset this moment, and I hope you all will like it.
Thanks!