This journey can be done within a few hours by road or rail, so would that preclude the possibility of a PSO? I just can't see EDI or GLA being viable commercially, but would there be an inbound leisure market from somewhere a bit further away?
Flybe have been promising big things at INV and ABZ for ages. T runway doesn't look long enough for FR, so how about BE taking a leaf out of their book and calling it Inverness West?