Quote Originally Posted by Satarn View Post
All the people saying that you need to level them in order to farm dungeons outside of MSQ - this is incorrect. It used to be the case at launch, but ever since patch 5.1, you can switch between Trusts(pre leveled, only story-accurate NPCs for any MSQ dungeon, including Exarch/Raha and Lyna) and Avatars(leveling from 71, can use any NPC for any MSQ dungeon, only Scions+Ryne) freely. This means you can farm dungeons with your Trusts without leveling Avatars at all.
I am fairly sure you can only switch to scenario mode after getting all the avatars to Lv80. I tried to replay Grand Cosmos in scenario mode again, but couldn't.