Possible solution for cursor keys in icon mode
Left and right cursor keys are used for the cursor when i start typing to launch an application, so they can't be used for navigating through search results simultaneously.
As long as im just typing normally, the cursor will always be at the end of the text, so there is no need for the right cursor key in the text box. The right cursor key is also very important and useful in icon mode because it will let you launch the second suggested application with just one additional button press.
So why not make the right cursor key control the selected icon, as long as the cursor in the text field is at the end of the line?