What made you buy your monitor?
Having a monitor at all has plenty of killer apps: Anything that it displays that you want to use that you wouldn’t be able to do otherwise without a monitor.
But your particular monitor? Well, it looks like the Apple VR thing is about 10x to 20x the price of a basic VR headset. Is your particular monitor 10x to 20x the cost of a regular monitor? If so, there probably is some killer app that made you get a fancy monitor. And maybe it’s something that no other monitor can do… otherwise, why spend 10x to 20x as much?
If the Apple VR thing also has a computer built in (and its own specialized software), then comparing it to a monitor isn’t accurate. It’s not a peripheral when it’s a standalone device.
There’s a set story, but it’s discovered. The world is wide open, and the player can go anywhere right at the start of the game. There’s minimal railroading at any point.
Unless I misunderstood what you meant by emergent narrative. The progression through the game requires the player to learn what to do by interacting with aliens and also exploring a bit. There is an in-game hint system (an alien dialogue tree with prices), but there are often multiple solutions to each “problem”. The player can even get through the game being good or evil – whatever they choose!
The game plays very differently than ME, but you’ll probably find the dialogue trees very familiar. And I think SC2 actually does them better than ME.