I was thinking of a way to improve the inventory system. This is what I came up with.
The notes in the image will explain a lot.
Things that would be changed/removed:
-Hotkey menu removed (see note about hotkeys in image)
-Character display in inventory removed (useless)
-Potion menu removed (replaced with timers on the actual inventory screen)
-Item amounts in the right panel of inventory removed (replaced with numbers on the actual icon squares)
-/hp command removed (kills to level would be displayed under player stats)
-Money, HP, and Armor display in inventory (removed because it's already displayed in the GUI in the top-left corner)
-Gun Stat bars on the right panel removed (replaced with actual gun stats)
New Things:
-Hotkey display on item icons, letting you know which guns are on which hotkey.
-Labels:
Would allow players to create labels, specify items to be under created labels, specify a color for the label, and have the items outlined in that color in the actual inventory.
-Auto Sorting:
Would automatically sort items according to their labels.
-Legend to tell you which color corresponds to which label.
-Additional stats displayed for guns:
Clip, Ammo type used, Shop Value, and Sellback value would be displayed on the right panel.
-Item Descriptions for non-gun items detailing what they do, what they're used for, where you get them, etc.
-Inventory setting button denoted by a wrench in the bottom-right corner of inventory.
-Changed the color, but that's just for looks (and to make color outlines stand out more).