The problem with that, in regards school work etc, is that they would be up against the likes of Horsburgh, who's overheads are way lower, enabling them to put in a lower tender price. The drivers on school work are in the main part time, which wouldn't suit someone at Eastern who is on a full time contract. The West Lothian tenders have just been fulfilled, I don't know the length of the contracts, but even if it was only 1 year which I doubt, they couldn't keep a depot going in the hope that they would win them next time around.
As has been said, Lothian will need more drivers, so those that want to, if suitable, can find employment there, those that don't, can move to Larbert.