Consumer management URLs are of the form Special:OAuthManageConsumers/<stagekey>/<appid> where <stagekey> is something like "rejected" or "proposed". Having this component is not useful: it is not actually used for anything, and it just leads to misunderstandings in edge cases (what if a message sends someone to /proposed but the application has been rejected since then? In other words, this make it impossible to link to the management page without knowing the state of the consumer (or faking it, but then there is no point in having it).