I was thinking with the temp release to make the requirments harder if you still have time remaining.
Another thing I was thinking is the keyholder can have different modes, e.g. lenient which is probably about how they are now, or a more strict/harsh mode, where you wouldn't be allowed to cum at all for the duration. The strict mode would also tie into the being forced to have another duration if you ignored them too much in the previous duration we were talking about just before.