IAG may be prepared to, but it doesn’t want to create 'BA Express', if it did it wouldn’t be entering negotiations. It would just do it.
IAG would much rather mainline BA become more competitive, so you have more bargaining power than IAG are letting you believe.
I’m sure BA does need to change, I’m not against the idea of stretching the pay points, but allowing the company to create 2 pay scales will end in tears for the new pilots in the short term and the 'A scalers' in the long term. The burden should be shared by all and unity maintained.
If BALPA and its BA members agree to this 'splitting' of the workforce, it will be a massive own goal and BALPA should no longer be allowed to call itself a UNION.