As a Aha user, I want the ability to add individual release phases and milestones to the starter roadmap without having to add it's release, so that I can represent those components against my initiatives.
Thank you for your idea. As noted, currently release phases and milestones can be in the Starter roadmap, contained within their release which then maps to the initiative. It is possible to create a Custom roadmap that shows release phases directly mapped to the initiatives of their releases.
Given the ability to create a similar view using Custom roadmaps, and given other priorities, we are unlikely to implement this idea at this time.