SuccessCycle UI space efficiency

I think one of things that would make SuccessCycles more useable would be to move completed items to the bottom of the stage or have a way to show/hide completed items. Also I think having a dedicated slot to add a new task or activity at the bottom of each activity group takes up a lot of space. It would be cool if that was more of a mouse over reveal of a way to add a new task or activity so that the information could be more compact in the space given.