I was writing from a standpoint I once had in a Story Arc me and some friends were doing at a forum of our own.
The Emperor is dead and most of the galactic plane has been leveled on all sides, allowing anyone who doesn't have a significant connection to each other outside of regular astropathic whoohah bait for rape. The setting is a small fleet heading to the Armageddon system to link up with simply the largest crusade to ever take place since the Great Crusade.
I wrote that from a few ideas I had in my head when we were at the starting point.
None of this took place during or after the Horus Heresy, way after, late 41st or 42nd Millennium.
As for the whole Castellan thing, generally we agree that if there isn't a captain for a ship, and or no single captain is willing to take command, the noble and godly on the battlefield Castellan of the Black Templars would be most likely to grab the reigns. That and it's just one of my mannerisms to call every single fucking Black Templar Captain a Castellan because I'm cool like that.
SO ANYWAY, enough fluff tangents Aqizzar;
No it didn't have anything to do with my character, but that is the style of how I write when I can help it, and or in first person with a few different things thrown in, which I might use if we're all doing this first person.
It shows that I'm a capable writer and RPer, so that should be good enough.
Besides, I already have an idea how the Rogue Trader would act. Not entirely in happenings aboard the ship, quick to jump to command, roguish to a fault, and "adventurer extraordinaire"; when there isn't a profit to be made.
At the very least, I can come up with some interesting mannerisms that don't entirely involve acting like a super eccentric captain.
On a final note for the Novellaish thing, I should have finished that so it didn't leave you confused, but I didn't have time. The setting is more interesting than it sounds, and there was more than a dozen interludes to go through from that point, so no way in fucking hell am I gonna start writing some sort of novel RIGHT THIS GOD DAMN MINUTE.
It takes a few liberties, but most of what's canon stays canon. For example, it was said that the Golden Throne had some sort of mechanism the Mechanicus couldn't fix. We had used that as our starting plot point and it developed from there. Then I decided to write this rambling of how a small collection of chapters made up of mostly Black Templars in this little fleet on their way to war felt and how they would handle the troubles of keeping a collection of super human warrior monks fighting together if the reason they fought was for their Mortal God Emperor, who at this point in time was dead, laying the Imperium wide open for wholesale looting, pillaging and slaughter without the astronomicon. We had a few Tau and Eldar players. One or two Chaos. And bunchful of Imperium.
Moving on, nothing to see here.