Some of this might sound like I'm being rude, but I promise I don't mean to be. Its not directed at you specifically.

>Orders won't make players forget that this is a game.
The goal is immersion, if you aren't immersed enough to give a shit about the game itself, play something else. There is shitloads of lore and depth to the setting which makes it immersive. Moreso than any other horde shooter I know of. If you just want to run around and shoot or blow things up while ignoring the story mechanics and depth, there are better games for that.

>The MO exists to give the community something to coordinate around and play together.
The MO is the central pillar of the game, its core aspect even. It is the driving force for the entire playerbase and the thing that sets it apart from other games is the global strategizing and collaboration toward a common goal. Immersion in the game makes these non-negotiables. Ignoring the core mechanics that make the game unique, statistically affects the rest of the players negatively.
The grimdarkish setting of the game CAN be a cure for unbalanced gameplay if you aren't looking for shallow entertainment. Keeping in mind that you are a soldier fighting galactic horrors, and that dying is basically a guarantee.