Don't mean to doom monger here but I'm going to anyway.
If the rumour is true then perhaps the girls and boys at BMI should be on guard for a T&Cs battle in the future?
GSM surely has inferior conditions to BMI thus has a lower cost base which BMI may well want to emulate in the new 'combined' airline.
Is this another 'Whithering Branch' Stealth strategy the likes of Jetstar, Open Skies?