I can say that Bartolini has a big problem with their sim instructor. I have never felt I was wasting my money in that way before. Briefings were quite superficial, from time to time some advice, no de briefings. In my humble opinion, students would be more ready if they had another instructor for that stage.
Regarding DME ARC, I cannot agree with you here Hawker, as you have to perform a dme arc during the VOR app rwy 07 and it is also practiced as part of the basic IR in the real aircraft.
As I said the NDB should be practiced and taught during the sim phase, but...