Pez (yes the candy) style list
Remember Pez candy. You could only take one at a time and the next one would move up once you took one out? Well when I work on a project it's like that. I have a lot of steps that get completed and I don't want to see every step in the list.
My idea is like Pez. You design a list for a project and it disappears only the next logical task will appear. Check that one off and the next logical task will take it's place.