Allow order of exercises to be changed mid workout.
Ever try sticking to your training plan in a busy gym? Rarely are you able to get through a workout exactly as planned. I'd like the ability to change order of exercises mid workout to maximize my client's time with me.
Stuart Maytham commented
Yes you need to be able to change the order of exercises both during the session and when writing it. Otherwise you have to delete everything and start again which is really frustrating