Thread:Support/Get really "unreviewed" messages only/reply

As explained in mw:Help:Extension:Translate/Quality_assurance, the feature is certainly not thought for blocks of 18 thousands messages: the current process to do what you describe is to review one group and then mark it proofread (a feature active on Meta for instance).

1, 2, 3 or 100 reviews: when is a translation "reviewed enough"? That's not a judgement that Translate currently does. Do you have a proposal on how to add an option to filter translations reviewed by N others without cluttering the interface?