Firstly just a copy-paste from another thread...
When I select a skill to use and have to select the target, let me use F1-F4 to target my party members. That's the first thing I tried, intuitively, but the only result is changing the active character.
Give me the option to pay for items with gold or items from SEVERAL CHARACTERS. Right now when I try to do this, the game mockingly asks me if I want to really change the characters and reset the trade. No I don't! I want to add stuff to the trade from the other characters to make the experience more pleasant for myself.
And why the love for having to hold down the mouse button while doing anything? Click-and-hold to move stuff to my bag, click-and-hold to move, click-and-hold to craft. I mean, left-clicking items in the inventory DOES NOTHING, so there's no reason not to initiate dragging by left-clicking, and initiate dropping by left-clicking. You could even have both. (As has been requested before.)
There's a context menu to move items to other characters. Add an option to this context menu to move stuff to my open bags. Then highlight the open bag while I hover over the option so I know where it's going.
Then give the ability to select multiple items, so I can just send all those 20 items to the bag in one go instead of having to do the whole thing 20 times.
And about the map as well... While in main game screen, WASD moves the camera around. While the map is open, WASD does nothing. How about making WASD move the map around? Instead of having to click-and-hold here as well. And when I click on the map, I want my characters to move to that spot.
Esc should not close the inventory before closing the windows opened from within the inventory. If I open a book from the inventory and hit Esc, my inventory is closed but the book stays open.
Using bags is just a total drag. I open a bag. It opens on top of my inventory. I start to drag an item to the bag, the inventory becomes the active window and blocks my bag. I have to move either the bag or the inventory out of the way to get something into the bag. And the next time I open the bag, the same deal. If you're really gonna make me do this, at least open the bag somewhere else. Same with other characters' inventories; if there's room on the screen, open them somewhere else so I don't always have to manually move them around. I cannot open my bag in the trade window. So I organise nice and tidy, and when it comes the time to sell, I have to do the whole reverse drag business to get it sold. When I use bags, I don't think "awesome, now my scrolls and stuff aren't littering the inventory", I only think "is this really worth all the trouble I'm gonna have..."