Dynasty Mutation is an upscaled dungeon which means there are 0 legendary drops. Items can drop at 600 but they’re not legendary. That also means that it is a waste to upgrade any <600 item with umbral shards to 600, because it will not receive 3rd perk.
In addition Dynasty is very hard. As a GS600 I was declined to enter M1 (!) by every single person that was willing to sell spot. GS615 are struggling with M1. As someone who couldn’t do Lazarus mutations and have no umbrals that mean I can’t progress in game until mutation changes. This seems like an oversight on devs part. I understand that mutation should be hard, but they should be harder the further you go, not impossible to get to M1 unless you have GS625 carrying you.
Both terrible drops that are simply not worth time and money along with difficulty of doing a dungeon (possibility of loosing an orb) have resulted in complete stagnation of mutations on my server. A week ago people were selling spots right and left. Now I see 2-3 people per entire evening selling a mutation spot and having problem filling it.
If you want to mutate Depths and other dungeons, you first must resolve this issue. Make proper balancing of dungeon difficulty and most important - reward players with good loot. This game already feels very unrewarding with it’s garbage generated perks on ‘legendary’ weapons. No need to add to that garbage named items.