If there's a CN or CR task available for user, he has to open the CR/CN and click on a black ribbon to reveal the task buttons in a small popup. We have seen on our environments that these buttons are sometimes slow to load and is just a waste of time.
It would be more beneficial if the buttons are visible to the user directly when he opens the CR/CN at the top-right corner without having to click the black ribbon. If the user is not the designated assignee, the buttons can just be greyed out.