I do get a fresh set of structured (bike & run) workouts in TrainingPeaks from my coach every week (which works really well by the way - good job, Garmin). In addition I enter my swim workouts as structured workouts into Garmin Connect by hand. As a result I have a lot of structured workouts. And by saying "a lot" I mean "a boatload of them".
Are there any plans to structure these in some way? Folders? Auto-delete workouts older than a given date? I am a bit worried that I might hit a database cap at some point.