Right, while making the pixel art a moment ago, i thought of an interesting specilisation this faction could have, and yes, it is pretty much stolen from panphlet bombing from ww2.
so, say the ISC (regrettably) goes to war, they are a defence coalition but they prefer peace to violence. so if the ISC can blockade a planet for a bit, they launch the aforementioned leaflets at the planet:
if civillian:
autotakover, however resistance remains for as long as the ISC remain.
(after war they would give it back)
if industrial:
autotakover, however all factories ect are disabled for as long as the ISC remain.
as well as high resistance levels, and if millitary industry, some will pick up the arms they create.
leaving a high level of armed and dangerous millitia.
if millitary presence is high:
moral drops drastically, leaving many civillians wanting to rebel and some millitary also.
this leaves defences say, a quarter less effective, but can be easily countered.
if fortress world:
defences weakened, but still only by around 1/6, so it is ill advised.
however if already weakened by orbital bombardment, could be the final nail in the coffin.
if capital planet and or if faction has less than 1/3 of their planets under control:
effect decided by faction leader in control of planet
HOWEVER:
the "ability" can only be used if a blockade is active for a day, with a cooldown time of another day
if successful.
as mentioned before, the ISC isn't some war mongering group, to have annoyed them enough for any of this
to happen is unlikely. And after a war the ISC returns all planets and outposts, in return for no further conflict
and a kind of "puppet" goverment to be installed. (if it is a dictatorship said dictator can remain as long as sanctions are in place.)
more importantly: ships moved