The expanded notifications introduced in Jelly Bean allows adding actions. The actions appear as buttons in a row. If I wanted to modify this with my own custom view I would consider a remoteview.
Do expanded notifications allow for remoteviews? I can only find examples of remoteviews being used in simple notifications before the expanded notifications existed.
It appears that http://codeversed.com/expandable-notifications-android/ has the answer in the Custom View at the end.