On the Features->Roadmap view, when viewing a release Roadmap that includes Feature status, items are either aggregated under their feature status, or lumped into a "Not Shown In Presentations" bucket.
The mechanism by which the default state of a feature (in terms of its inclusion in the presentation) is unclear, though we understand we can changed the visibility of any given feature by toggling the checkbox next to it.
Our idea is for a convenience method to "Show All Features In Presentations". We have releases with 50+ features, and our view frequently lumps ~30 of these features as "Not Shown In Presentation" though we've never explicitly removed them. This would prevent us from having to click on 30 individual items to get the view we are trying to present.