Item Menu
TFT really needs a toggable item menu where you can see all the advance items in the game. The menu could show each item with a colored outline representing how close you are to completing that item. Red Outline: Missing 2 components Yellow Outline: Missing 1 component Green Outline: Item can be created Hovering over an item would show its description and double clicking it would create the item assuming you have the components.
I think this would improve the game immensely since it's very annoying having to alt-tab mid game to see what items build into.