The system I have in mind would involve an expanded list of questions to ask the candidate in more detail about their contributions and how they see themselves fitting in. Then, instead of asking editors to support or oppose, editors would be asked to assess the candidate's contributions in several different aspects
But the important thing is that not all admins do everything. A user who has never reverted a single vandal can become an admin as much as a user who has never tagged an article for speedy deletion, or written a featured article. This system would prevent that. --Mets501