Glasgow will happen if they are serious about doing this, it's a better bet than ABZ which BMI used to fly with ERJ145s. If they're serious.....
GLA of course did so well for BD that it got dropped completely
Regardless, I think they can make it work to all three Scottish airports IF they have the stomach for it.
Which I don't think they have and they'll all be dropped in 1/2 years citing big bad BA, the world's not fair blah blah blah