Should I start a roadmap? Do I just choose ideas and set dates with requirements?
Only you can determine if the roadmap feature will be useful for you. Have you reviewed the information available on that feature? For the Free subscription, that would be the Basic Roadmaps functionality.
https://www.atlassian.com/software/jira/features/roadmaps?tab=basic
It looks like you're new here. Sign in or register to get started.