A possibility for an annual training plan would be great to plan TSS, Time and Intensity roughly in advance for every week for the upcoming season.
It would make training planning a lot easier. I mean if you know you have a plan leading you over the hole season plan with a roughly time, TSS and Intensity value for each week it is way more easy to plan the workouts for each week/day.
Maybe the weekly goals are a option to integrate this feature, whenever it could be shown somehow in a form of diagram or/and in the fitness chart (maybe in light colour in theory back).
btw a goal >999 TSS per week is not possible.