I love being able to map initiatives in a timeline report. However, we can currently only report against the initiative start date or end date. It would be great if we could use the "Time Frame" attribute of the initiative as a timescale option too.
Thank you for your idea. Time frames are generally meant as a grouping or filtering mechanism for initiatives which may have their own unique start and end dates. As such, time frames do not have start and end dates.
Given the explanation above and historical support for this idea, we are unlikely to make changes here at this time. We hope you can understand.