At present I'm flying FlyBE to BHX for less than the price of an ID90 with SN or BA. Yes you get a two minute bus ride to (and from) the a/c but it was the same when BA were operating their EMB145s. No inconvenience to speak of really. By the way, all commuter jets (CRJs, ERJs, etc.) are parked on remote stands at Brussels no matter who the carrier is.