Doors2Automatic - bmi baby is doing OK. It's actually the only airline of the bmi group making money (bmi mainline is losing money and bmi regional is apparently just about breaking even).
wingattack - while getting A319s would be a welcome development for baby, I think that if this was the case, their registrations would give a hint (all "recent" baby a/c have been in the G-TOYx series). While working with (not for) baby, I haven't heard anything about A319s. Maybe the single-class Airbuses are meant for bmi mainline domestic routes...
Cheers