In Features/Roadmap view, have all sub release list under the master release vertically / rather then horizontally to make time line easier to read. Merged

I'm trying to find the right roadmap view and so far -- only seem to get close to what I want via pivot tables.

I'm am using Master releases for Business units and all Product Lines / Product release are sub-releases under that master

In the Features/Roadmap view, all of those sub releases seem to list out horizontally, since there are so many... the roadmap scroll horizontally, no longer lines and instead funky lines leading back to the time line exist.  Not sure how to get value out of this view