rare marks are impossible to find
Finding a 'rare' mark is next to impossible in the ui - even if I select a range that contains it in the timeline, scrolling the waterfall diagonally makes it very hard to spot the one rare mark in the sea of other marks.
- highlight marks by some criteria (different background color or somesuch)
- A way to jump between the marks in a 'sequence' and update both the timeline and the waterfall to go there
Having some synchronized way to scroll both the timeline and the waterfall together would be excellent, independent of that