And long may it be so.
Variation from rules good, airmanship (dont believe they would ever compromise that). Perhaps your perception is distorted, remember they have very high level skills which extend their boundaries whilst still applying principles of airmanship.
The Reds often do an impromtu display at NCL when leaving and joing after the Sunderland airshow, please don't tie them up in too much regulation and spoil what is supposed to be fun!!