Pug,
I doubt BE could afford to operate an ABZ service head to head with Eastern, it's not a "low cost" airline destination as such.
I know Easyjet do Luton to ABZ but it's with a much bigger aircraft and much higher passenger loads, even then it's not particularly cheap.
One can only hope that the new owners can afford to ride out the next couple of years without shedding too many jobs, competition from Donny will be hard to overcome and some hard nosed business decisions are going to have to be made.