Hello,
In some cases, it is relatively difficult to create a family for all the existing situations in real life. For example, a plumbing manhole. The latter can have from 2 to 4 (or even more) connections with, for each, different heights and slopes. The realization of such a family quickly becomes rather difficult to make and relatively unstable to modifications within a project.
The possibility of having virtual connections would solve many problems of this kind.