AD Police aligns itself better with the noir aspects of the cyberpunk ethos than Bubblegum Crisis. You can feel the Bladerunner inspiration more here. The episodic nature of the OVA does not work against it. This is effectively world building for Crisis despite the tone being quite different.
Leon is one of the worst parts of Crisis in that he is actually a a low-key member of 'Dominion Tank Police'. He become far more human in exploring these 3 episodes. Along with this, the impacts of technology integration and augmentation are explored both on the level of the individual and to some degree on a societal level, which has and will continue to be an important topic for people to explore.
Definitely a worthwhile watch.