People are telling me there is a rise in demand for encrypted charr battle plans.
Indeed there is a quest with several groups coming from different sides.
Search did not give me any results.
All three of the Special Ops missions have large numbers of Charr you can kill, so they could have farming potential... I'm guessing a permasin could solo them in Hard Mode, although healers and rezzers might make it a bit slow and inefficient.
Personally, I suspect the demand for Battle Plans is because each Special Ops mission gives 1000 Vanguard points in about 5 minutes (no extra points for hard mode). You could get Vanguard points at a similar rate or higher using other methods... but I think using Battle Plans is the easiest way until you reach rank8.