It will be nice to have an option, for the triggered project, that will hide it in the downstream graph/view.
For example: I have a Jenkins configuration for building, testing, packaging an application. I use BuildPipeline plugin to operate with this configuration. There are some major projects that do each of the previous steps. Inside this projects are used many small projects that do small stuff(checkout sources, copying some files, zipping archives, etc). In the main BuildPipeline view, I don't want for each and every job to be displayed, but only the big ones. For this, it come in handy if it exist an option that can mark the triggered project as displayable or hidden. This way, the plugins won't count this project in their displayable project list.