I did warpriest challenge last night three times in around 45 minutes or so. That included some extended periods of standing around talking and a few spontaneous dance-offs. Hard mode NFs that will take the average player a few hours to complete with rewards that are only obtainable once per week per character seems like a good idea. It would add some variety and give incentive to do an activity that many players are skipping on.

Bitching? lol I'm just saying its boring. A 320 nightfall such as brothers with solar burn or saber with arc burn would be harder than any single part of the raid. You wouldn't get rewards like you just did the entire raid. A 320 and 310 item as well as a 320 and 310 artifact are guaranteed rewards for completing a single part of the raid ( hard mode challenge). So completing a 320 strike would be longer and harder than a single part of the raid.