Wanted to add, I don't believe this for a second.
One of the oldest themes in Warhammer 40k is that the Primarchs approached - and in some cases exceeded - the Emperor in power.
That's not my opinion. That's one of the oldest quotes from Warhammer 40k rulebooks.
That having been said, I think what they (the writers) were trying to say in that case was that a Primarch might approach - or exceed - the Emperor in a certain aspect
I disagree. I think he has an overall plan. The only reason he is on the Golden Throne is that is exactly where he wants be. IMO the Heresy was just stage 1 of he is trying to accomplish.
"Omnipotent" means "all-powerful" - it has nothing to do with having an "overall plan". Feel free to disagree with me. Like I said, neither one of us will know for sure until the last books are written.
Personally, though, I think what happened to the Emperor was the absolute worst-case scenario. I think there is enough evidence out there that shows that the Emperor's "master plan" was - basically - to:
1. Isolate humanity from Chaos through a secular society - deny the Ruinous Powers their biggest source of "fuel".
2. Utilize the Webway to give humanity galactic reach without being tainted by Chaos.
Instead, the Emperor is stuck in agonizing limbo, serving as the figurehead (and lighthouse) of a brutal theocracy whose very actions ultimately ensure Chaos just gets stronger.
Food for thought. What do you think 10,000 years worth of fanatical worship does to a near like god being in the warp?
Ian Watson's take - in the "Inquisition War" trilogy - was that they go insane.
Not a vision as much as common sense. Horus was no fool. What happens to us (Astartes) after we win the "Great Crusade"? They have no station in life. The war has been won. And looking at the Thunder Warriors the Astartes could expect the same fate. I am no big fan of the Emp. despite our argument.
Interestingly, though, Horus never mentions it. His concern seems centered on hubris - his fears that his dad is on a power-worship trip, ironically exarcebated by the fact that he himself isn't famous in the future.
More seriously, though, Horus isn't worried about his warriors being wiped out; he's worried about them becoming obsolete. The Great Crusade is the war to end all wars, and what will happen to the Legiones Astartes is voiced throughout many novels. Some characters (uincluding Horus) resent the idea that they will have to answer to bureaucrats. Others believe the idea is silly - that there will always be another war. Still others - in "Know No Fear" - probably have exactly the right idea: that, while the Astartes are magnificent warriors, their powers and abilities are such that they could be much more. With their minds, they could potentially become the next class of leaders/rulers/managers/etc.
I think the Emp. would have thrown Magnus on the Golden Throne in a second to scream into the void for eternity if it meant he got his webway..
Where did the corruption first start? I don't think it was him getting poked with a sword on Davin.
There's a difference between having a flaw (hubris) and the process of being corrupted.
... and most shocking of all is that he mentioned a gold ring that his father gave him a year b4 the emp was born. I am as old as dirt (40), so I remember the old fluff.
You'll have to remind me where that's at.