well shooting one of the privius chapter masters of the Dark Angels seems pretty heretical, and that you shoot imperials more often than traitors you might perhaps poses the lions sword, but you are not so smart at finding a way to the imperial palace.
Naieve. I have all the time in the world. They hide their secret like cowards. I will expose it and then expunge it. If they want to stop me then let them try but none shall succeed. Back on topic however, the blood ravens are actually an extremely interesting chapter for all their faults. I highly doubt they actually steal anything, that was probably just a gameplay mechanic.
They returned to the Primarch after realizing who it was and becoming heretics becoming the Sons of Magnus Warband.
I came across this and thought i would send you some back up it is true the Blood ravens would be recovering from the Chapter civil war and would need years to recover their numbers, Ether way i would love to see them added all in due time, Maybe some nice lore bits here and there. Blood Ravens Index Astartes entry - GW website sourced from http://wh40k.lexicanum.com/wiki/Blood_Ravens
Loyal to the Emperor, probably. But on the other hand, they have committed acts of treason in their eternal quest to maintain the appearance of an immaculate record. But I suppose that "Praise the Emperor" is basically a free pass on conduct
and why all the others first foundings chapter with thiusand of successor chapter become heretics are still in? the only exception is grey knights, all the others primarchs have traitors sons