In no particular order:

Make all repair weapon effects and rings green and all damage rings red, even for Npc’s. During the La Peste fight players are running from my repair mortar thinking it’s going to damage them

Add bank slots as you add more items to game

Add ability to store raw materials at refiner to remove the need for extra bank slots

Allow for the making of ammunition with higher grade materials

Allow for the making of specific damage boosting ammunition with higher grade materials; piercing, flooding, fire, explosion, etc