I would be very, very wary of any 'documentary' by RT. Ms Slier may have a good reputation in other fields, but with RT involvement I would suspect the motives of the 'documentary'. (I would also question the usefulness of any RT documentary in bringing about any real changes in the fatigue situation as I can't see RT being taken that seriously on the matter; the easyJet pilots might be in the process of doing a lot more to promote concerns on this matter.)
If 'fatigue' is going to be investigated, then this incident might be of interest:
Incident: DAT AT72 at Karup on Jan 25th 2016, aligned with runway edge lights for takeoff, especially the HCL comment "
Due to the recent sleep and the time of day, flight crew performance was impaired equivalent to more than 0.05% blood alcohol concentration."
This could create in interesting link to aircraft accidents where actual blood alcohol concentration has been a factor. Could Ms Slier do a documentary on that or would RT veto such a documentary? (Any guesses why RT might veto it?)