How could Stobart seriously operate to GLA? The route is a 20 seater route, Euromanx operated it with the Beech 1900, IIRC, and Vanair with the Let. It has, based on the CAA figures, 20 pax/day. So I don't see how a 74seater on that route would make any sense. The same applies to BHD. A single daily flight on a Q400 would lead to more capapcity than Vanair offered with four daily flights - and demand would be much weaker because of the loss of a same-day return option. Based on the above figures, Flybe could not fill a Q400 on a single daily flight. If they were to operate twice-daily to offer a same-day return, they would operate with a 40 per cent load factor.
I think we need to be realistic. It would be a great success of Loganair could be lured to the rock, but I doubt it. The most realisitic option is somethnig like AIS Airlines with Jetstream 31s, but the days of cheap Citywing fares will be over and with higher fares, even a 19seater operation will struggle.