Yea I hope they allow us to have unlimited control over the UI and graphical aspect of the UI.

I would also like to see more in depth functionality with the marketwards and boss encounters.

Examples being:-

Able to pull and download the price history of items on the marketwards/AH and save to a text file, this would allow players to display average prices and sale history for selected items.

Able to add large text to the center of the screen when bosses perform moves, this can be easily read from the battle log, such as when Coincounter uses 100 ton swing, the addon could read the battle log and display the text on screen so players are aware of the move.

I agree with titan panal being very useful I think I used something else but did the same thing.