Indeed, serious competition on the early and late NWI/ABZ rotations, these flights carry almost full loads on T3 and BMI (Saab 2000 and EMB135 respectively),
If, as I suspect, the landing slots during peak hours at ABZ are significantly more expensive than at other times, the "low cost" fares will only be available a long way in advance.
T3 already operate two further NWI/ABZ services during the day, and these tend to be patronised by passengers who are able to book some time in advance and get the cheaper, restricted, air fare, perhaps that is where T3 may have the advantage on this route.
The NWI/DUB rotation is an ominous sign for Air Wales, The very fact that Flybe will operate a daily return service is significant, however, neither will offer a day return service, so it remains to be seen as to who wins.
Flybe to MAN is another distinct possibility, but again, I don't know how much it costs to land at MAN at peak times - which T3 do 3 times a day, and the service is very cost effective.
T3 also operate NWI/GRQ once/twice a week on behalf of Shell, but the route is also available to anyone who wants to travel on it.
James - you've obviously been looking in the wrong place, for the last few years it's been as busy as hell with new schedules and 'bums to the sun' flights.
God knows where we're going to put all this extra stuff!