I never got around to running Shades of Twilight in Dark Heresy.
It was just too much of a straight-forward action adventure.
However, I was thinking how much more rich and vibrant a game it could be if adapted to Rogue Trader.
Instead of grabbing a group of acolytes, saddling them with a Space Marine and flinging them at a Space Hulk that will be reduced to rubble in 14 hours, how much more interesting would the game be if a Rogue Trader crew simply found the Twilight floating in space.
Obviously, a few things need to be switched around. The Deathwatch Marine would be attached to the other boarding party, who would then be encountered soon after the Dark Eldar encounter. The players would learn all the opening backstory, including that the Space Hulk will soon be reduced to space dust, only after they are already on board and commited to the course of action.
The Acolytes are there for the sword, while the Rogue Trader crew are there for the loot. Hunted by Dark Eldar and plangued by ghosts, with a traitor in their midst, this takes a fairly boring action adventure and really turns it into something altogether different.