I feel that KLM should really hammer home the message that you can fly anywhere in the world from AMS by departing from Teesside (Oops) The general public (that I have talked to) seem to be unaware of this.
The alternative to flying from Heathrow, when we had the connection, seems to have not been exploited by KLM. Get advertising KLM, more, and you'll increase your load factor and maybe require even larger A/C to cope with the demand.