Individualize your training plan
It would be wonderful if there was a way to import only certain sessions from a training plan into the calender. For example, only all swimming sessions from a triathlon plan because you are only a relay swimmer.
You could also, for example, import all swimming and cycling sessions from a triathlon plan and import a pure running plan in parallel if you want to prepare for a running event. This would allow a more individualized training design without having to manually delete sessions.
Perhaps it would be possible to ask the user which training weeks (and sports) should be imported from a training plan into the calendar.