Display essentials of navigator
Depending on how many pages and how enlarged they appear on the navigator, there maybe grey space in the non-occupied areas. I think it could be redesigned, so that only pages appear (see image ).
If there's more pages, it would just expand horizontally.
If you want the navigator to appear bigger, you can grab the top of it and move vertically.
I'm unsure as to where the navigator should be placed. It is currently placed leftward, but the linked image shows it in the centre. Perhaps the user can choose.