So here's what stands out to me, with explanations below:
-The Aether is our next map
-The O4 are dead
-Maxis is NOT a computer AI
Pretty crazy how I can gather all this from that one diary, right? Not so much. Lets start with The Aether. The only bit of information that supports this is the first paragraph. Maxis wants to uncover the dimensional gateway to the ethereal realm itself, but to do what? That I am not sure of. However, what I am sure of is that Maxis is aware that Samantha is dead. What this means is that Sam in Richtofen's body has died, which if she died, I must say it would be safe to assume that Tank, Nikolai, and Takeo are dead too.
Yes, I said it. They're all deader than a door nail. But for good reason!
Lets look at the second bit from the diary.
It is my sincerest hope that somewhere in the realm beyond, my beloved Samantha still lives.
So if we recall all the way back to Moon, I believe it is stated that when the zombies die, their souls go to The Aether. So why is it different for the O4? It isn't.
My prediction for the next DLC is that we will be playing as the O4 in The Aether. What better way to follow up Moon as a final DLC finale, am I right? It also appears that whatever Maxis is scheming to do in The Aether, Samantha is important in his plot and it is important she is still alive in The Aether. I believe he is trying to get into the Aether in order to instruct the O4 in fixing the Earth, as that is where the Earth has to be healed.
But, I have yet to get to the part where Maxis is not a computer AI. This one is a bit trickier and a little more farfetched, but here goes.
First, I don't think maxis would still be making diary entries as a computer AI, nor genuinely care about the date of the earth or Samantha. That bit is just off.
NOW, here's where it fits together. In buried, when we first find the guillotine, Richtofen ends up saying that it will be perfect to thwart Maxis. "No, we don't actually need to take his head. I was speaking metaphorically. Although, beheading does come with temperaments."
Now, why would he say that if Maxis were indeed a computer AI?
That's right, he wouldn't! Because Maxis isn't an AI! He is a living, breathing person!
All this time he's been talking to us through electronics.... Because he's been talking to us through electronics!
And that is my Maxis Diary breakdown. Thank you for reading and feel free to correct me on anywhere I am wrong, and I shall update the thread accordingly. What are your guys' thoughts?