Drag items on the custom roadmap to adjust start\end dates and scheduling Merged

In the built in strategic roadmap option we can drag, drop, and resize\reschedule initiatives and see the details of these initiatives when clicking on one of the sections. We use a custom roadmap for various reasons but within there it’s much more rigid, we can’t move things around or drill into the details either.  It would be really useful if this was available in the custom roadmaps too, at the moment we're having to switch between views, make changes and then switch back again.