Game developers feel they have to kill off main characters in games for them to have shock and awe value. That's I'd the stupidest concept I've ever had to grasp ever. CoD SPOILER***
When your partner in crime in modern warfare 3 died off that was the most unnecessary thing I've ever seen. No reason he had to die. When (and I'm assuming we all beat halo 3) the sergeant major died at the hands of 343 (no pun intended) I had to ask myself why? That was also stupid. Why after three long games did he die at the hands of guilty spark? Halo couldn't stop him. (Still don't know how he got off that first ring world after hugging that elite.) The events of Halo 2 couldn't stop him... Really?
If they killed off master chief that would be like Nintendo killing off Mario. You must be off your gah deeyam rocker to think S117, JOHN would die at the ends of anything sentient or otherwise. I would chalk that up as the biggest waste of 20+ years of gaming by the time Halo 6 comes out if that happened.
Stop killing off people that don't need to die for dramatic effect. The ONLY character that had to die was gears of wars CARMINE. (Family). Lol. That's only because it made the third gears of war installments carmine epic. (Pun intended). That's my opinion.