First Off lets go over the main obvious issues that everyone is pointing out..
Moonstones/Elysians Orbs/Soulstones/Scared Orbs:
Moonstones, Elysians Orbs and Soulstones aren't something that's realistically farmable for most users. Sure you get less then 20 Soutstones and 8 Moonstones 4 Elysian Orbs from doing a 3 set weekly challenge, but that's weekly. And we need at minimum 30 Soulstones and 8 Moonstones and 8 Elysian Orbs. Making it take at minimum 2 weeks to to have one attempt to make one. And considering you can get 0 Elysian Orbs and Moonstones, if you have Bad enough RNG it can sometimes take 4+ weeks. The main, and pretty much only, reason we need Moonstones, Elysian Orbs, Soulstones and Scared Orbs are for upgrading your weapon or getting enhancement stones. Which Multiple of both are required, one being heavily RNG based while the other being a more static number.
Pet Packs, Sterling Crystals, Stigma Crystal Fragments and Scared Vials:
Stigma Crystal Fragments and Sterling Crystals have 0 ways to craft or farm them. Yet for a small chance to enchant your Heart/Talisman 1 level. Needing at minimum 30+ Sterling Scales but only 10 Stigma Crystal Fragments. It doesn't make sense why two items, that have the same amount given to us a week, aren't the same cost for 1 level and why one is almost three times the cost of another.
It just doesn't make sense why Soul, Pet, Heart and Talisman have different costs between them all. Soul and Talisman required the same amount of Scared Vials and Stigma Crystals, yet Scared Vials are craftable and can drop from doing Stage 8's of Grim and Chimera. And for some reason Pet costs 2 more Pet Packs per stage then Scared Vials and Stigma Crystals, even though they craftable like Scared Vials. Also for some reason the amount of Sterling Crystals needed is so high that it's not even worth it to attempt going 1 stage.
Let's Also not forget that Pet Gems require Pet Pods, and a insanely high amount of them, Meaning it's never in one's interest to attempt to upgrade Pet Gems, because of the small increase it'll give in comparison to leveling up your Pet or getting your Talisman to Max. Ex, 63 Pet pods to get Gilded Square Pet pods which gives 8 AP, 3 Boss AP and 55 of the additional stat or for diamond 13 AP.
In Short, we need more then just 6 of each type given out through events and weekly chests in the Dragon express weekly or probably need cost reductions for enchanting Soul, Pet, Heart and Talisman. Also we need a way to craft Sterling crystals and Stigma Crystals or more needs to be distributed out per week, mainly Sterling scales as we need at least 2.5 times more per one level then the rest. Also a Fix for Pet Gems, requiring an insanely high amount of Pet Packs
Oculus Stone Fragments and future Accessory materials:
When you do a full train of Dailies a day, I expect to have at least 1 chance of attempting to upgrade my Accessories.
For Oculus, this is impossible to do, as the amount required is almost double to triple to amount of Oculus Stone Fragments given out for doing a full train. Assuming you do it on Easy, 3 from completing a Heroic dungeon, 10 for doing a five set daily, and 6 from doing stage 1 Nexus, Chimera, and Altar. Leaving you with a total of 19 Oculus Stone Fragments a day from a full purple train, which is the standard that most people even attempt to do now-a-days and should be the baseline for materials. But at 19 Oculus Stone Fragments a day, you still have to wait at least three to four days before you can even make 1 attempt at a level. But this is only if you do a full train every day! Since we have rest rewards most people don't do a full train a day, they'll wait 3 days before doing it making it drop down from 19 to an average of 13 a day.
Now I know people will come back and say "Just only do Hardmode Train" or "Just only ever do Stage 5's!" or "You can just farm them by doing X Method". The point isn't that we can't farm them or that you can just do harder content to get more of them, it's that the baseline for obtaining these materials, AKA Easy Mode and Stage 1's (Which to be honest is what the majority of the community does anyways now), is quite low on average compared to the total amount required. So just a small bump of easy modes and stage 1's would fix it. Ex instead of getting 2 Oculus stones from doing Stage 1's it should be like 5.
Daily and Weekly Challenges:
A lot of the chest and rewards in the Daily and Weekly Challenges aren't as good as they used to be, since the content they give us things for content that's no longer in use.
"Daily Challenge Reward Chest" Why are we still being given lucky revitalizers, when they don't even work in DemonsBane Dungeons?
"Deluxe Daily Challenge Reward Chest" Why are these still giving out Ascension Token Fragments?
"Armory Selection Box" Why does this even exist still? The only thing that's good is the Dungeon Treasure and the 5 Excellent XP Charms, Legendary Elements and Jewels are outdated and only give us a small fraction of gold and the Raid Treasure is worthless as we have Chaos Supply Chain for Soul Shields.
The Enlighted Element and Jewel Bundle, Both of which are like Legendary Elements but sell for much less and aren't used anymore.
"Weekly Challenge Reward Chest" The only thing of use in this chest is the 2 Excellent XP Charms, the rest is old content.
"Jyansei's Supply Chest" This one is given as a reward for almost every daily, and all it ever gives is 1-2 Naryu Coins.... Which Naryu Coins aren't even used anymore.
TLDR:
We need a Way to Farm and get more Moonstones, Elysian Orbs, Soulstones and Scared Crystals.
We need a way to get more Scared Vials, Pet Pods, Stigma Crystal Fragments and Sterling Crystal, or a reduction in cost for Mythic Soul, Pet, Talisman and Heart.
We need a more Oculus Stone Fragments from just Easy Modes and Stage 1 Demonsbane.
The Chests in the Daily and Weekly rewards need a rework.