very true..the flamegraph seems to give a good overview with an idea which events are taking most of the time..but I also felt, exploring flamegraph is difficult. Though when you click an event in flamegraph it zooms to make the selected event as parent but I was thinking to add another view like Jaeger to help see other small events.
Please raise 2 PRs.
1. Increasing Usability of existing flamegraph. We can make this a collection of other small issues.
2. Explore Gantt chart