yes!! being able to drag and drop or move an element from one day to another simply by clicking on say mondays workout and moving it to wednesday for example.
I would love this as well. Specifically, my priority would be on the website, that's where I do most of my planning/scheduling. Lower priority (for me) would be the mobile app.
This would be great; when planning workouts the first thing I tried to do is drag and drop some elements from other tracks into future days for myself. Even an option to "Duplicate Workout" and select a future date would be very helpful.