Using cylinders or additional pneumatic tubing solely for additional storage is in Violation of the spirit of this rule. Similarly, using pneumatic cylinders and/or tubing without any air reservoirs is also in Violation of the spirit of this rule.
if i’m using a cylinder only to release air (for a separate endgame system), does that still violate this rule? it’s not connected to the main reservoir and stays in one state until the endgame
It seems to appear that it does violate the rule as it is not connected to the main reservoir, so you are using other elements of the pneumatic system for additional storage.
So time to rethink how your systems work. If you deplete your main storage, and still have additional capacity you are violating the spirit of the rule.