you should be cautious not to kill casual trading in that part. - i do have a problem with engine components and optronics ( if the later was added ). both are hardly a matter of the war with bretonia - and by exporting them, it helps kusari, too.
furthermore, - on second thought, - it may be fine to enforce any embargo - but should it not rather be a civilian one? - so shouldn t samura / kishiro enforce it - and not the military in that case?
when engine components, niobium, optronics are "banned" from casual trading, there is not much left. - its like shooting your own feet. - not everything that you can justify in RP will have a good effect on the RP enviroment.
here is an example:
i have been providing FP 11 with engine components, making the nice route from honshu to delta via one of the last "legit" routes we have. - now i have been confronted by the KNF and rightfully been told that its not allowed. i was told that i can obtain a license and that it won t be hard for a zoner vessel. - so far so good.
but the RP of my zoner would rather say ( since he fled the regulatory machinery of the inner sphere ) not to get caught in the bureaucracy again. - he took the only consequence a zoner has - and placed an embargo on kusari himself. - meaning, no more trades of cobalt from FP11 to honshu - cause i am not able to take anything back.
i adjusted my route to rheinland instead - picking up engine components at new berlin and taking the omega route to delta. - in RP, honshu just lost a major provider of cobalt and a source of money that would take their engine components. i m a bit doubtful if thats really what kusari wants.
in terms of gameplay - its just less players you get and more NPCs. think about overregulating stuff. - and/or leave it to the cooperations like kishiro or samura. - a trader may rather deal with restrictions made by other civilian cooperations than a house military, even if the interconnections between the vertically involved kusari cooperations and the goverment are interdependent.
if optronics and engine components are illegal without a license, - it ll cut off honshus exports as this planet has nothing worth selling anymore. adding niobium ( even if its meant to cut the ooRP traders that use the chogoku route ) to be illegal may - if enforced end up with no traders at all anymore. - the whole kusari space may end up empty. no traders, no pirates, no lawfuls.