There are so many things that need be augmented or changed and the devs won't listen to the player base anyway.
They promised to see what they could do for CoP rings for example last year and we're still waiting.

Anyway :
CoP/Aht urgan rings
Thief knife or at least a higher lvl version with treasure hunter.
A better way to buy/craft Arrows/Bullets (250k/stack of bullets really SE?)
R/E/Ms augmented. I finished my vere99 2 weeks before the update, thanks a lot for making it less powerful than a weapon you can get in a 2-3hrs battle.
Elemental gorgets/belts/obis augmented like the Chatoyant staff which would allow us to only carry 1 of those said belts/gorgets/obis.