There was an article i had read some time ago saying that a successfull fast bowler should have a long stride while at crease releasing the ball. Many bowlers who had long leg stride jeff thmpson, denise lillee, waqar younis...etc
Bowling a long stride bowling is very difficult. In 2001, when bowling at coaching club, i had no control in pitching correctly. But i felt very athletic. Some bowlers spend so many years in bowling like imran khan, w.akram, w.younis...etc. And still able to beat the batsmen with shear speed. Nowdays cricket is not played for leisure, but as a competitive sport. So i feel that many batsmen try to adapt to play bowling. I sometimes watch classic cricket and i like the bowling of terry alderman.