Assets / Services - Relationships List View / Upstream & Downstream Update

From the list view and mapping, is it possible to have a drop down to be able to update or add a relationship rather than deleting and re-adding. Plus if this has to be done for multiple links then it makes the process very tedious. Being able to see all the links and being able to just update with a drop down from the list view or by clicking on the link line and updating from a drop down, would make this more seamless.