In some cases, some apps require to be restarted. It would be awesome if a feature for this was added. I just installed package control to sublimetext, and after install it requires sublimetext to be restarted. Could not find any feature for this (corret me if im wrong).
One way that may be neat, is to expand the «restart» keyword so you can exit and reopen applications with «restart "app"», and reboot the computer with just «restart».