Here are some QoL I can think of that would make going through the game's systems much faster.
Fusion
For those that used Rebirth Flames, it highlights the items in your inventory that aren't flammable such as rings, badges, emblems, shoulders and secondaries and tradable items if you are using a Karma flame. I hoping we get a similar feature when it comes for item fusing. Once one item is selected for fusing, all items in the inventory that aren't that item would be highlighted in red so only duplicates of the items you are trying to fuse would be visible. This feature would be extremely useful for fusing items that share the same sprite (Empress Capes and Shoulders, Tyrant Gear, Absolab Armors, etc.)
Rummage
With the quick character swap coming soon from KMS's Milestone update, this would be a great addition. This feature would allow you to look into the inventories of all the characters on your character for any missing items or if they lack items and to see how many mesos they have. I was thinking of an item search feature that you search manually like Pet Item Ignore, but it would only work on one item and you would need to spell it correctly. This feature doesn't require you to remember the item's name and you could search multiple items with Rummage. This would eliminate the need to check every character when something goes missing. I was thinking about this feature being an expansion to the Legion System, but it would not show characters below a certain level in case someone has a level 10 storage mule that is loaded.
Character Stat Check
This feature is used to see the equips, stats and skills etc. of other players. This would be a handy feature to see the stats of your other characters in case you have gear prepared for them or wondering who needs to be worked on instead of visiting all characters until you find someone with a V Matrix or ability that is lacking.
Finding you other characters
This feature would allow you to find which map your other characters are in (not the channel.) This might be least useful feature on this list.
would be better to delete the whole gauntlet of monsters before PNO and treat it as a regular boss or at the very least make the mobs rooms have no gimmicks like the path to Hilla or RA Bosses
Like so many pay2win items, frenzy totem will probably be phased become out and forgotten (ie mule gear).
Level 280+ training areas are coming out soon, 6th job coming out soon. In the coming years, I expect the new level 300+ cap and more level curve reduction to ultimately kill off the obsession with frenzy totem.
rip tinkerer mar 2013- jul 2018
rip magnus/hillas rage: nov 2016-jul 2018
rip battleroid: nov 2015-aug 2023
rip perma pendant slot: jun 2012-aug 2023
rip frenzy totem: aug 2016- ??? 2026? 2030?
Frenzy has its uses for growing lowering mules in the Arcane region/Tenebris Region if they do decide to make Grandis instanced to prevent the spread of the effect. It greatly affects the speed we acquire EXP in lower levels (even if they make it ineffective in endgame areas) as well as greatly improves meso rates, material farming (droplets, nodes, symbols, cores and stigma for Abso.)
Nexon has the choice of removing it to force us all onto the same playing field or to release it so that there can be more circulating the server in hopes that someone acquires one. Frenzy is currently in its worst state currently since 2019 as there are no new Frenzies being introduced and ownership only changes in the black market. The items you mentioned above only got powercrept or Quality of Life happened. No amount of EXP curve would make Frenzy Totem irrelevant as its not just boosting training, but it boosts meso income and materials needed for growth and also blasting through dailies. Even with level curve, Frenzy will still be useful as it cuts that time further allowing faster legion growths.
If Nexon doesn't want us to hit the level cap so fast, they can restrict usage of Frenzy up to Liminia. If Nexon has problems with people farming or sharing the effects, they could implement's TMS's version where the effect subsides if the caster leaves. Nexon is free to implement either version of the totems with or without level/area restriction, restrict its usage in Grandis+ or remove the remaining ones.
I rather see our old ingame cubes make a return. The mythical, hard and solid are still very hard to distinguish compared to the old Meister, Master Craftsmen and Occult cubes. They function the same as the new cubes so i don't know why they went thru so much effort making them. And why are the names so terrible? "Hard" cube will lead to confusion and unwanted sexual innuendos. Meister being changed to solid is stupid change. The item pieces, meister cube and the rank meister made a lot of sense until the change had to take place to do nothing but make it harder to distinguish and make naming a nightmare.
Also the old cube system was a lot better since the cube fragment system had their items priced better. I feel like this whole cube system than revamped was a huge waste of time if they were only gonna rename, recolor and make the fragment system a bigger hassle.