This first step of requiring to choose a format and resolution has been pushed on Trakt V2. We are going to monitor the impact of this change over the next weeks.
This is important because it makes the Library structured enough to be really useful as a list of items you own and intentionally mark as such. This requirement enables better filtering, sorting, and future improvements. Without this, the Library would just be an easy to access List. And this is something we want to avoid given the underlying data structure of the Library. But it could be a good feature idea for List management.