Circumstances change and you end up shuffling workouts - deleting workouts etc
Trying to compare what you should have done with what you’ve actually done can get very difficult
If you could keep workouts in the calendar but just hide them and their TSS - i.e. grey them out it would be easy to see what you should be doing in the plan against what you are actually doing.
Add back workouts from the plan that you’ve deleted for one reason or another, without having to find the plan - find the week - find the workout - reinsert it
compare an outdoor ride, outdoor workout with the indoor planned ride
Even better - if the calendar had a trend line in lighter grey for the ‘hidden’ workouts.