It would be useful to let clients at least see a preview of the next phase. Even just a few days in advance so they can see what's coming and what exercises they might need advice on. I have clients across North America, and many like to work out first thing in the morning. If they can't see the Monday workout until Monday morning, it ends up being a missed day (or a crappy workout spent looking things up) for them. To get around this, I have to manually send them a list of exercises in advance, which negates the convenience of using the app.