Before every message should be a timestamp, local or server, does't matter, just let us know the time someone wrote.
Let us differentiate between global and local
Many people don't even know there are two chats and you never know if people actually respond on local so you don't see their message or nobody responded. Let people know by some tiny prefix / ikon whatever, just let us know if we write on global or local.
While we can easily ctrl+v into the chat there is no way to select previous message and copy it. When I made a mistake of writing on local instead of global I have to rewrite the entire message.
Shift + up
Let up scroll through our past messages with shift + up / down shortcuts.
Stay on top
Let us make chat stay on after we hit enter, it's not a big thing but currently I have to reenter chat for it to stay on. With this feature it would be also great to be able to make chat transparent with some slider.
Crafting / Building
Search box in crafting window
Let us search through crafting recipes. A simple input box at the top of the crafting window would suffice. It takes way too long to find a recipe a name of I know.
Craft max items possible
Add a max button like you can see on screen below. This button would set number to the max items we can craft with the materials we currently have. I know we can just write the number but this button would be easier, it's all for user friendly UI.
Number of crafted items
Currently there is no way of telling how many items will be crafted unless you actually craft them. Why not add a number next to the spear just like it is with wood (see image above)?
Don't make us click this damn green button!
When placing building I constantly have to click that green button just to see "place occupied~" message. This message sometimes shows out of nowhere and standing somewhere else will allow me to build at the place it seemed I couldn't.
On the screen below there should be a red mask applied to wooden shed.
Make escape close any recently open window
Escape does not always understand I want to close recently opened window. I don't know if it's a bug or not but please, let us use escape to close all the windows one by one.
I can't remember how many times I accidently logged out because I tried to remove something I accidently wrote in chat input box... Please, stop.