Don't make it so dramatic. Passengers don't know who is in front and how was he trained. My point is it is not necessary to check when ECAM says monitor imbalance. Once you have finished all actions and take a situational awareness decision fuel situation will be considered and if the fuel situation is like you stated you should apply the procedure. It depends on circumstances. There is no requirement means do not have to balance for balance sake, but if it is necessary because of the fuel scenario then apply it by all means. Even if you don't outer tank fuel transferred should trigger you to do it anyway in any situation.