They need someone like dear old Terrance Dicks to write it, Graeme Harper to Direct, and above all all of the Doctors to be in it for it to work....
The Doctor: I tell you, Brigadier, there's nothing to worry about! The brontosarus is large and placid!
Harry Sullivan: (to the Brigadier) This the patient, sir?
The Doctor: (looking up at Harry) And stupid!
The Doctor & Harry Sullivan - Robot