1. What kind of events should the timeline display?
2. Does the number of events vary or is it always the same?
3. If it varies, is the number of events limited (min/max)?
4. Do new events occur over time (betting, real-time events)?
5. Do all events have the same weight, or are there any critical ones?
6. How do we expose/highlight critical events (e.g. now/coming up next)?
7. How do we represent each event (photo, date, icon, text, rates)?
8. For each event, do we need to display more details on tap/click?
9. If yes, how do we display these details (accordion, tooltip, overlay)?
10. Should some events or time segments be available/fixed at all times?
11. Do we communicate changes over time with an underlying histogram?
12. Do we need any filters for various event types? Where do we place them?
13. Do we need a slider to help users filter out irrelevant segments?
14. Can we use a dual-point slider to explore the timeline in snapshots (video editing)?
15. Would a horizontal or vertical timeline work best on desktop?
16. Can we break up the timeline across multiple lines (wrapping, snake)?
17. Can we break down the timeline into segments (e.g., tabs, swipers, accordions)?
18. Can we collapse calm segments to make space for busy segments?
19. Can we add zooming to change the number of events or level of detail?
20. Can we make better use of mobile space with a circle/square UI?
21. Can we add a mini map to help users navigate a complex timeline?
22. Can users explore events with a swiper or a wheel navigation?
23. Can we show dependencies via metaphors (tree, branches, layers, bubbles)?
24. With a lot of events, how many do we expose by default (mobile/desktop)?