Main menu search
The blocks of the left column
Need to limit the number of items in the main menu, to split a long list of items into meaningful groups. This will help to make menu icons for compact menu. Not to take the place of the bottom of the screen, the footer links can be placed at the bottom of the sidebar.
No need to reload the menu items.
The menu is large nesting can be decomposed into several sub-menus. So it is easier to perceive and easier to adapt for tablets or phones.
Main menu with search
Click on the magnifying glass opens the results to the right of the column.