You seem under the impression that your two points are not already in action. But they are.
Itch prevents malicous things to be published / indexed. If unclear it gets in quarantine. And Itch takes down things that need to be taken down.
Problems are, that staff has a lot to do, and some cases are opinion based an staff might disagree with a report. Plus the things I saw obviously tricked the system, else they would not have been indexed in the first place.
This update hopefully improves all this a lot in multiple ways. Malware I reported sometimes took 3+ weeks to be taken down after a report. And some of the things I saw were so blatantly that an old school filter would have cought it - if the filter would have been adapted in time.