All the tools are already available in MRA but how they works is a bit odd. That's why my prefered choice isn't possible.

This option could have a better use it should be used now.
If enabled like in the screenshot. The route should start at current position and navigate you to the nearest upcoming waypoint. And if possible just follow the original route.
I think this what most people want and what @Thomas-Scharrer is looking for.
If disabled. You must go the startpoint of the route.
And offcourse. What already mentioned pressing a waypoint of your choice.
I think this one is too complex for a quick restart. Because you need to scroll along the route to search for the waypoint of choice.