One small feature that would cut down on a persistantly annoying issue, would be:
When you die, have your inventory items show up FIRST, and then your armor, and finally your toolbar items in order. That way, you don’t have to refill your toolbar and armor, then shift all your items up to the top of the inventory.
I use the custom arrangement, because I like to keep my most useful items, like alt tools and repair kits up at the top, and the junk to be organized below. As it is, every time I die, I have to play inventory scrabble and that blows!