The chat box should be rotated 90 degrees so that it is along the left hand side of the screen, this is what most other games do as it is the least intrusive way for text to be, with icons rather then full words to differentiate the tabs e.g. world for global, smiley for friends, clan icon for clans etc.
The icons on the bottom row should be condensed into one icon, so save more space, bringing a pop up menu, this can then be customised so the icons on the right make gameplay easier, possibly add a button in the menu which allows you to switch to dropping mode. The minimap should be shrunk into the world map icon, where clicking it once will open the minimap, and then clicking the minimap will open a full scale world map, which is then navigateable.
Apologies if the language sounds rather aggressive, didnt know how to phrase it, but these are the things which i would change.
14-Sep-2017 18:23:43