When using the planner it's currently way too insignificant difference between an active and an inactive plan. It's just the italicized style. For us as a new school in Itslearning it has created a lot of confusion, questions and misunderstanding.
From a uasability standpoint it would be very easy to make it a lot better. Even the discreet blue color, telling me I have activated/inactivated the plan, is a big step forward - but I don't see it when working on the plan. Why not make it e.g. changing between a dashed/straight border top with changing colors or something else that signals the different states.