I want more ways to sort items, too. By name, by type, by rarity, and by level. Ascending and descending order.

In fact, if the inventory window could be split off from the character window into a much bigger inventory window, that'd be awesome. I'd like to see more inventory slots at once than you're able to right now. Scrolling is a pain.

This should also allow you to open the inventories of at least two characters, so you can drag and drop stuff between them rather than use the dropdown menu, which gets tedious with a lot of loot.

Also, the item stacking limit needs to be raised for all stackable items. Again, scrolling is a pain and having the same items in different stacks clutter the inventory just adds to the problem.

Oh, and a tab for newly obtained items would be cool, too. Make newly obtained items glow or highlight, and when you mouse over them, mark them as "seen" basically, clear the "newly obtained" status, and remove the glow/highlight.