As described in the attached thread, users should be able to attach multiple licenses to datasets, pertaining to the various rights of each file in the set.
File-level licencing and metadata is currently on our radar, but not something being considered for 2017. Early 2018 is a realistic estimate for beginning work on this.
Has this progressed at all?
It's progressed in design and specification but no development progress at all. It's a mammoth task and I've not been able to schedule.