I agree with Dennis in that you can only do just so many exciting displays. After 45 years in helicopters, having done my first little display in 1964, by the time I was in my 60s I had toned down my display. Naturally I was never in Dennis's class but the crowd seemed happy.
I remember a naval pilot many years ago who specialised flying a plank wing at 500 ft & bunting to fly very low down the runway upside down. After a 2 year desk job, Farnborough asked him to display & he agreed. He practised over a railway line for track guidence but his ego wouldn't let him start higher than 500 ft. His reflexes, etc had slowed & he flew into the ground & was killed.
In other words with age or lack of currency, any aircraft can & will bite you. These days I just watch, much safer!!