So i got some time to twiddle ideas in my head while at work and one of them stuck. Here is my thought process and I would really appreciate some feedback. I also updated the original post to the current state of this article.
So being that this Thrallband is all about Self(as opposed to a Chapter which is all about the collective), I needed something to guide me in making this Magister and his evil associates click. A friend suggested looking at the major events in TS history and seeing how they would affect Nebnefer.
Horus Heresy - Really could care less about it
Burning of Prospero - Following the burning of Prospero and the Legion's retreat into the EoT, he was forced to watch the imperium he knew, loved and fought for become a glorified and bloated dictatorship
Rubric - Although he wanted to hold onto his humanity, Nebnefer never wanted the obliteration of his friends and comrades that ended up being the result of the Rubric.
I found it peculiar that what evoked the most emotion was Prospero and not the Rubric as I had initially thought. So I decided to follow that emotion and idea and went down the trail of a Humanity Loving Thousand Son.
Other Thousand Sons: Keeps them at arm's length, if Ahriman is capable of the Rubric, then any one of them is capable of treachery
Ahriman: Secretly hates him for the Rubric but admires and respects him for his knowledge and power
Magnus: Wished he would have guided the Legion better instead of being played like a pawn. Does respect him for his recent actions on Fenris and outside of the EoT.
Mankind: Still feels that they are the elite race of the galaxy and wishes to bring the glories of the crusades/Prospero to them
Imperium: Hates them with a passion and seeks only its demise
Daemons: Finds them as useful tools and unlikely allies
To me right now the interesting goal of this Thrallband, under Magister Nebnefer, will be to establish an academic utopia for man. Somehow to carve out a piece of space beyond the imperium under which mankind may continue to flourish as it would have with Prospero's guiding light.
Destroy society as it stands to rebuild it by his standards. This will be done on the battlefield for obvious reasons but also off the battlefield through the establishing of academic cults, starting planetary revolts and seeking writings/artifacts to use or to sway others with.
Other names for the Thrallband(given to them by mortals): Cult of Serapis, Academic Guild of Thoth and the Good Teachers.
So...is this stupid or might I be on to something?