Thumnails 8 column for overview of the book

Hello everyone,

I search this feature, but doesnt find it:
How can i see a overview of the book’s pages, scrolling thumbnails, inside the program?
I see in the display menu “two pages”, possible here to allow 8 pages ?
That seems very useful to me especially to navigate inside huges books with images.

Here an exemple of what i mean (online viewer):

Other exemple (program for djvu) :

If this is not actually, is it possible to create this feature in future version of the program?
The perfection would be a icon for that in the toolbar.

I beg all readers here to apologize my broken english.
Best regards