After a few weeks of noodling I'm really pleased with Portfolio and intend to use it to communicate a roadmap to our board of directors, among other helpful activities.

For the BoD, seeing each project's timeline with releases is sufficient detail, especially with Themes adding useful context. However with 20+ projects, epics are too much detail and clutter up the otherwise informative timeline.

Having Epics under the Schedule Settings would be super, alternatively where you can select to display Epics or Stories have the option of displaying neither.