After changing form e.g. Menu SYSTEM to CONTENT, the content of the page does not change until the user clicks to submenu item, e.g. pages.
A user might get confused and/or getting annoyed about this. Usualy a the first menu item will be active in a submenu.
The “Recent ContentBox News” in the dashboard might be not the thing a regular editor/author wants to read. Please over the possibility to switch if off.
Cheers