For arguments sake, imagine if the psiclone actually worked if activated. What sort of effects do you think it would have?
I imagine that your soldier will get a slighty boost in some stats, such as morale and maybe even energy. The side effects will be that you temporarily lose control of the soldier. The soldier may also start to hallucinate and may see anything to be an enemy and start attacking it. This could be at a a bush, a civilian, at nothing at all, a toilet bowl, or even your own soldiers.
As for its after effects, a soldier might get addicted to the psiclones and will start to automatically pick up and use a psiclone whenever they run across one without your intervention. And if the addicted soldier does not use a psiclone for a certain length of time, they'll suffer from withdrawal, and suffer a loss in morale and or strength for a certain duration, or may go rogue and attack a fellow companion in order to get any psiclones he or she may have picked up.
Addicted soldiers will have to be rehabilitated over at sanctuary clinic, or you could put them in temporary or voluntary isolation in your cells (let's assume the prison cell modules were implemented) and let them weather the effects of the psiclone withdrawal until it's washed out of their systems.
Just a thought. Or maybe the psiclones will just turn your soldiers into vegetables-for-brains for a very long period of game-time until the psiclone runs out of power or someone actively removes the psiclone. That would probably be much easier to implement.
NKF, narrow minded fuddy duddy who refuses to let go of the past and will not accept anything newer than 1979.