Scales cannot be farmed from dungeons in Cross Server(F8) anymore. Forest of Echoes was the main way to farm them (since it had lower HP as a 4man dungeon) but they are no longer on the drop table. You CAN run Thornwind Cavern, House of Idols, Stonescale Passage (requires 2 ppl), Cathedra Cliffs, Brood Chamber, Sandstorm Temple for Scale Fragments from the daily quest, bonus rewards, and drops, but this is very inconvenient. It is likely not intended for the dungeons that were just removed from F8 to be the only farmable source of scales (Nocturnal, Shimmering).
Skystealer Crystals are also in the same boat as Scale Fragments; you can only acquire them from the 3 Bonus Rewards or Nykarri Hall of Trials floor 1-2 if you choose to farm that. 4/6 BiS accessories are still Skystealer, and most people won't drop their class for the Starcross accessories immediately, so it's very stupid to not have a farmable source of upgrade materials for them. I know KR somewhat addressed this in a later update, but it seems naive to just ship an obviously broken patch when a fix already exists. Why copy mistakes when you can avoid them?
Substratum no longer drops Sterling Scales so there is literally no way to upgrade Heart without acquiring them from the Hongmoon Store (not enough supply on market). The drop rate was already terrible enough before that the only real supply of them was from Trove, but now there is actually no farmable source at all.
Also, as people have already said, the trader for the new demonsbane dungeons doesn't have a menu.
Even then it's rather unfortunate you need both 300 runs, 20 essence, and it's limit 1 per ACCOUNT.
KR also got Triangle Garnet and Obsidian from normal dungeons in F8, while we still only have Octa (although realistically it doesnt matter unless it's at least Square). It doesn't really matter anyway since most of the people who cared about garnet/obsidian just abused soul boost before it got adjusted.
Soul Boost is also pretty much impossible to complete since it requires Aerodrome 1-11 and 7 DC Quest requirements (was only supposed to be 5), which is very difficult now since there are only 9 Quests on DC, and 2 of them are PvP which are mostly impossible to complete since the queues won't resolve. Not that big of a deal since there's only a month left anyway and there will probably be another Soul Boost after, but it would've been nice for it to remain functional.
I hope at least some of these issues can be addressed soon rather than waiting for the next patch cycle. I'm not holding my breath though, NC management has a pretty bad track record with running any of their games or listening to player feedback.