When creating/manipulating tasks/revisions/whatever, there are often several events that are done as part of a single step. For example, consider the following event log from creating a task and subsequently claiming the task/commenting on it:
{F93428}
In this screenshot, there are 5 separate events reported:
1. Creating the task
2. Adding myself as a subscriber
3. Changing the view permissions
4. Claiming the task
5. Issuing a comment.
What's not clear from this view, however, is that there were actually only two transactions:
1. Created the cask (1, 2, 3)
2. Claiming (and commenting on) the task (4, 5)
I think it would be nice if operations that are part of a single transaction are grouped together. First, I think it will make the timeline view quite a bit cleaner, and second more clearly associate comments with the action to which they are related.