So, droids take strain damage from ion, but suffer no other ill effect.
Living beings with cybernetics do not take strain damage from ion, but their cybernetic implants shut down.
If a droid with a cybernetic enhancement arm gets hit by ion, it should take strain damage, but will it also shut down it's enhanced arm? RAW implies so, but what if it's only a prosthetic arm, installed to restore functionality after a 'Maimed' crit? RAW implies that this should be the case as well, begging the question why only the droids original systems would be immune to ion shut down. You could make the case that performance enhancing implants are overclocked or something and therefore more sensitive, but that would be harder to explain with pure replacements. Will the traumatic damage a crit such as 'Maimed' leave a permanent "scar" causing a weakness to ion weaponry?
How would you handle this? Where would you draw the lines and with what reasoning?
And would you require a droid with a lost limb to get a cybernetic replacement or simply allow the damage to be repaired by a mechanic?