Suppose you could select some feature on one trace, and correlate it with a similar feature on another trace. For example, I shake my motion sensor before I turn on the Dreamstation. Next day, when I'm looking at the traces, I select the portion of the graph between my "motion" spike and the Dreamstation trace start.
Finally, a context-menu option on the traces says "Adjust time of this trace left (or right)". Then, for all the event logs from a single machine, single session, you add or subtract time equal to the currently-displayed period.
Does something like this already exist? Any ideas about whether it'd be as useful as I think? Hard to implement?