When bugs are closed with a TEST_REQUEST, they become invisible to a superficial bugzilla search. Bugs should be either open + unresolved or fixed + resolved. There should be no such option as a resolved-but-apparently-not-tested resolution: as no bug is actually resolved _until_ it is tested.
This is not something Infra can do of their own. Convince developers (enjoy gentoo-dev@) and we'll do it. Nevertheless, I doubt it's going to help. This will only result in developers closing bugs as FIXED, OBSOLETE or using any other resolution.
Please reopen when you get some community support for this.