Workout Schedule Question

I've just been reading different workout breakdowns like the ones in Krista Quiner's books and something occurred to me. Instead of a gymnast doing ALL her bar routines, then ALL her beam routines etc, why don't coaches break things up more and let them change events. For example Mary Lou would do 25 vaults (I think???), 8 bar routines, 10 beam, and two floor. Why not break it up and do 10 vault, 3 bars, 3 beam, 10 more vault, 3 more bars, 3 more beam, and one floor, and then go back one more time for the last set? It would be far more similar to competition and I would think it would especially help people like Simone, who get bored more easily.

Workout Schedule Question