Gantt Chart with feature to collapse/expand to a certain WBS Level combined with timeline display

At the moment the timeline is only used as a focus time slider feature. Vizualization of the underlying schedule will be very helpful to a understanding of the work ahead. It would be very nice to have the possibility to have the focus time slider work the same way as Synchro Pro, where the Gantt chart is displayed.

Adding a feature that will allow to collapse/expand the visible schedule (underneath the focus time slider) and only displaying the relevant and actual information on by expanding or collapse to the right WBS level of the Gantt chart wil help simplifying the relevant schedule information.