The ability to show something more than aggregates is, sure, a UI&#x2F;front-end issue.  (And an issue with intermediate storage, obviously).<p>But it&#x27;s misleading to say that tracing-vs-sampling isn&#x27;t a factor, unless you believe that the most-performant sampling and the most-performant tracing are roughly comparable.  TFA claims otherwise; the claim is that the maximum resolution of tracing is much better than the maximum resolution of sampling.