Speaking of the Live Preview, instead of seeing the live preview of the item, it is covered by the big drop-down menu. Why not allow the user actually see the entire text or picture you are previewing my making the drop-down menu transparent if he/she holds down the space button on keyboard and became opaque when released on order to select another item to be previewed. This makes previewing faster, more efficient and undisturbed.    For example: On Microsoft Excel. The user selects the table, then clicks the drop-down arrow for table styles and points "Medium shading". The menu actually covers part of the table. In order to "see" it, he presses and holds down the space button. The Drop-down menu becomes transparent and everything can be seen. He wants to select another option. He releases the space button and points on another style. The cycle continues until he is satisfied with that style.