As a follow on the ability to parse test from a pipeline, it would be great to be able to track individual test case history. This means seeing a history on a per-test basis, the way Bamboo Cloud used to do it (with, I'm sure, a much simpler UI). This allowed s to quickly look for tests that failed sporadically, how often they failed, etc. History for all time is not necessarily required -- just some reasonable amount of history -- say the last 50 or 100 pipelines or something like that.
(The Quarantine feature was nice too (which meant pass the build anyhow - but that requires more knowledge of the build process/tooling itself), but I suspect that would be difficult to do in pipelines and is not strictly necessary.)