I mix everything. I do body weight exercise in a grease the groove fashion most days of the week, a body by science big five workout once a week, a couple times a month I'll do dead lifts, sprints 2-4x/month, and I shoot for 3-5 hours of work (usually jogging) at a bout 75% my max heart rate each week.
I think the above works for fitness and health FOR ME. But, Marks program alone is actually plenty for fitness and health. I just like a bit of variety. As far as athleticism is concerned I'm currently not doing any skills work so none of what I do is geared to any specific sport. To be "athletic" you need to do skills training in that particular athletic event.