I wish I had as much faith in the immigration system as you have. Heard a story this week of a couple (British guy with a South African wife) who had been living in the UK together for about two years. Unfortunately they sent her application for ILR a few weeks or so after her current visa had expired. Not only was her application rejected as she was an 'overstayer', they witheld her passport and booked her a one way ticket back to South Africa.