I wouldn't discount the possibility of Norwegian Airlines adding some flights to ABZ. A few Scandinavian routes, plus maybe something along the lines of Palma, Malaga, Tenerife etc. Stranger things have happened.
and most people would probably still prefer to go to EDI or GLA for their holiday flights for all the well known reasons;
- Airport access/egress and parking challenges
- Boarding gate design nightmare
- Immigration arrival nightmare
- Baggage belt (singular)