Hi everyone,
Thank you for your report all!
This is an absolute ongoing plan.
Progressively the app will show up with new fullscreen versions of each of the existing main windows.
This is already officially planned for Cubase iC Pro 1.1 which will integrate a fullscreen KeyCommands page.
This latter being requested a couple of times already on this forum.
@Noir: The main reasons are as usual: time and priority. 
Cheers,