Having followed this thread for a while, to be honest I wouldn't worry too much about the loss of the ABZ route if it happened. The halcyon days of the oil industry have gone, and numbers will never get back to where they were as the N Sea oil industry ages. All the east coast routes to ABZ are in the same sinking boat anyway, even with just the one operator (I'm afraid the LM/T3 spat was more about trying to get one up on the other than a genuine need for competition).
I could see a return to the Air UK days, ie. when an operator consolidated the route - so for MME, I could see T3 doing what Air UK did, and route NWI-MME-ABZ for example.
I think you should concentrate efforts on keeping KLM on the AMS run, and perhaps (if LHR ever gets a 3rd runway, which is debateable) a link to LHR restored.