Analytics Workspace: Trending fallout % is not against journey start

In a workspace fallout if i right click on a fallout stage it has a great feature to be able to trend that %. However when trending this it calculates it againts all visits rather than the specific journey start point in my fallout. When a journey may only have a few hundred visits compared to millions of all visits it means the trended % is pretty meaningless and masks potential changes.

In a fallout i have a specific start page of a journey with subsequent steps i am interested in. These are the numbers deisplayed when removing all visits from the fallout and these are the conversion numbers i ant to trend.