Collapse and Expand All in Roadmap View Merged

Our portfolio of projects is very large with each one having multiple release phases containing multiple features. Currently, I have to expand or collapse phases and/or releases one at a time. I would save a lot of time during presentations if I were able to collapse or expand all with a single click. I do have saved views, but this feature would be useful for ad hoc needs to change views where I don't already have a saved view.