So I did Skolas without anyone having Gjallarhorn expect me... It didn't work. After 40 minutes of frustration my teammates had to leave. I stayed and recruited two players with Gjallarhorn, downed him less than 10 minutes. I'm going to start requiring it before the Nerf hits... It's too risky going all the way to Skolas just to realize you can't complete 35 PoE after 1h30m. It's less I want it done faster and more I don't want to spend almost 2 hours getting to a boss my Fireteam cannot defeat. No checkpoints are the biggest problem.