I'd love to see the marker duration and/or the delta time between markers.

Why? Well... I use them in two ways (either a green start and another red for end/or I use the duration of 1 marker). Chapter markers I temp use for temp rough cuts. I use them to measure the durations for the rough cuts before I commit to the cuts for the whole project which has a master time and I may have multiple editors asking for rough cuts from different areas more than I need. I color code them to weight the cut value so I can decide which marker blocks to cut.

Is there a better alternative to my methods? I like reading the markers on the right most tab and it only shows mark in/out. I have to hover over the timeline to see the durations.

Could we add the duration in the timeline as an overlay like clip names?