Leg
Not sure you're right about the Inverness bit. Sure, there's quite a bit of bad feeling up here towards Flybe but the truth is we're now desperatley short of London seats. I think the INV - LCY route (at Inverness anyway) could prove to be quite popular.
Also, the general consesus of opinion towards Easy, amongst the business and tweedy brigade, is not unilaterally positive. I've a feeling many will welcome it with open wallets, even if it is on a Dash.
As an aside, INV - LGW was generally about 15 minutes longer on a Dash and it burnt just over half the fuel for ten less seats than the 175. I'm no accountant, but.......