Its not a wait when you need imprimaturs to do the content required as part of the missions and imprimaturs incur a 6 hour wait per imprimatur? A new player running through missions doesn't know to front load those so they aren't a hindrance to progress.

Do. Other. Things. is a coping mechanism to a mechanic that serves little purpose after content has been released for several years. You may be fine with coping, but myself and many others would greatly appreciate the lessening of either dead time or being forced to change focus from the goal you set for your gametime. Imagine if your PC forced you to restart every hour to Go. Do. Other. Things. when you're trying to get work done on it.