A bad move IMHO.
'Stobart Air' sounds like a freight operation.
People will associate it with the highly unglamorous business of trucking stuff around Britain's motorways.
Images of fat bellied truckers eating a fry up are hard to dissociate with the name.
If they survive as an independent I can't see the name staying.
Having said that Aer Arann was a bit odd for an airline flying out of Southend, not so odd when they were flying between the Arann Isles and Carnmore.